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justify-content: space-between; } .MuiGrid-justify-content-xs-space-around { justify-content: space-around; } .MuiGrid-justify-content-xs-space-evenly { justify-content: space-evenly; } .MuiGrid-spacing-xs-0 { width: calc(100% + 0rem); margin: -0rem; } .MuiGrid-spacing-xs-0 > .MuiGrid-item { padding: 0rem; } .MuiGrid-spacing-xs-1 { width: calc(100% + 0.5rem); margin: -0.25rem; } .MuiGrid-spacing-xs-1 > .MuiGrid-item { padding: 0.25rem; } .MuiGrid-spacing-xs-2 { width: calc(100% + 1rem); margin: -0.5rem; } .MuiGrid-spacing-xs-2 > .MuiGrid-item { padding: 0.5rem; } .MuiGrid-spacing-xs-3 { width: calc(100% + 1.5rem); margin: -0.75rem; } .MuiGrid-spacing-xs-3 > .MuiGrid-item { padding: 0.75rem; } .MuiGrid-spacing-xs-4 { width: calc(100% + 2rem); margin: -1rem; } .MuiGrid-spacing-xs-4 > .MuiGrid-item { padding: 1rem; } .MuiGrid-spacing-xs-5 { width: calc(100% + 2.5rem); margin: -1.25rem; } .MuiGrid-spacing-xs-5 > .MuiGrid-item { padding: 1.25rem; } .MuiGrid-spacing-xs-6 { width: calc(100% + 3rem); margin: -1.5rem; } .MuiGrid-spacing-xs-6 > .MuiGrid-item { padding: 1.5rem; } .MuiGrid-spacing-xs-7 { width: calc(100% + 3.5rem); margin: -1.75rem; } .MuiGrid-spacing-xs-7 > .MuiGrid-item { padding: 1.75rem; } .MuiGrid-spacing-xs-8 { width: calc(100% + 4rem); margin: -2rem; } .MuiGrid-spacing-xs-8 > .MuiGrid-item { padding: 2rem; } .MuiGrid-spacing-xs-9 { width: calc(100% + 4.5rem); margin: -2.25rem; } .MuiGrid-spacing-xs-9 > .MuiGrid-item { padding: 2.25rem; } .MuiGrid-spacing-xs-10 { width: calc(100% + 5rem); margin: -2.5rem; } .MuiGrid-spacing-xs-10 > .MuiGrid-item { padding: 2.5rem; } .MuiGrid-grid-xs-auto { flex-grow: 0; max-width: none; flex-basis: auto; } .MuiGrid-grid-xs-true { flex-grow: 1; max-width: 100%; flex-basis: 0; } .MuiGrid-grid-xs-1 { flex-grow: 0; max-width: 8.333333%; flex-basis: 8.333333%; } .MuiGrid-grid-xs-2 { flex-grow: 0; max-width: 16.666667%; flex-basis: 16.666667%; } .MuiGrid-grid-xs-3 { flex-grow: 0; max-width: 25%; flex-basis: 25%; } .MuiGrid-grid-xs-4 { flex-grow: 0; max-width: 33.333333%; flex-basis: 33.333333%; } .MuiGrid-grid-xs-5 { flex-grow: 0; max-width: 41.666667%; flex-basis: 41.666667%; } .MuiGrid-grid-xs-6 { flex-grow: 0; max-width: 50%; flex-basis: 50%; } .MuiGrid-grid-xs-7 { flex-grow: 0; max-width: 58.333333%; flex-basis: 58.333333%; } .MuiGrid-grid-xs-8 { flex-grow: 0; max-width: 66.666667%; flex-basis: 66.666667%; } .MuiGrid-grid-xs-9 { flex-grow: 0; max-width: 75%; flex-basis: 75%; } .MuiGrid-grid-xs-10 { flex-grow: 0; max-width: 83.333333%; flex-basis: 83.333333%; } .MuiGrid-grid-xs-11 { flex-grow: 0; max-width: 91.666667%; flex-basis: 91.666667%; } .MuiGrid-grid-xs-12 { flex-grow: 0; max-width: 100%; flex-basis: 100%; } @media (min-width:600px) { .MuiGrid-grid-sm-auto { flex-grow: 0; max-width: none; flex-basis: auto; } .MuiGrid-grid-sm-true { flex-grow: 1; max-width: 100%; flex-basis: 0; } .MuiGrid-grid-sm-1 { flex-grow: 0; max-width: 8.333333%; flex-basis: 8.333333%; } .MuiGrid-grid-sm-2 { flex-grow: 0; max-width: 16.666667%; flex-basis: 16.666667%; } .MuiGrid-grid-sm-3 { flex-grow: 0; max-width: 25%; flex-basis: 25%; } .MuiGrid-grid-sm-4 { flex-grow: 0; max-width: 33.333333%; flex-basis: 33.333333%; } .MuiGrid-grid-sm-5 { flex-grow: 0; max-width: 41.666667%; flex-basis: 41.666667%; } .MuiGrid-grid-sm-6 { flex-grow: 0; max-width: 50%; flex-basis: 50%; } .MuiGrid-grid-sm-7 { flex-grow: 0; max-width: 58.333333%; flex-basis: 58.333333%; } .MuiGrid-grid-sm-8 { flex-grow: 0; max-width: 66.666667%; flex-basis: 66.666667%; } .MuiGrid-grid-sm-9 { flex-grow: 0; max-width: 75%; flex-basis: 75%; } .MuiGrid-grid-sm-10 { flex-grow: 0; max-width: 83.333333%; flex-basis: 83.333333%; } .MuiGrid-grid-sm-11 { flex-grow: 0; max-width: 91.666667%; flex-basis: 91.666667%; } .MuiGrid-grid-sm-12 { flex-grow: 0; max-width: 100%; flex-basis: 100%; } } @media (min-width:960px) { .MuiGrid-grid-md-auto { flex-grow: 0; max-width: none; flex-basis: auto; } .MuiGrid-grid-md-true { flex-grow: 1; max-width: 100%; flex-basis: 0; } .MuiGrid-grid-md-1 { flex-grow: 0; max-width: 8.333333%; flex-basis: 8.333333%; } .MuiGrid-grid-md-2 { flex-grow: 0; max-width: 16.666667%; flex-basis: 16.666667%; } .MuiGrid-grid-md-3 { flex-grow: 0; max-width: 25%; flex-basis: 25%; } .MuiGrid-grid-md-4 { flex-grow: 0; max-width: 33.333333%; flex-basis: 33.333333%; } .MuiGrid-grid-md-5 { flex-grow: 0; max-width: 41.666667%; flex-basis: 41.666667%; } .MuiGrid-grid-md-6 { flex-grow: 0; max-width: 50%; flex-basis: 50%; } .MuiGrid-grid-md-7 { flex-grow: 0; max-width: 58.333333%; flex-basis: 58.333333%; } .MuiGrid-grid-md-8 { flex-grow: 0; max-width: 66.666667%; flex-basis: 66.666667%; } .MuiGrid-grid-md-9 { flex-grow: 0; max-width: 75%; flex-basis: 75%; } .MuiGrid-grid-md-10 { flex-grow: 0; max-width: 83.333333%; flex-basis: 83.333333%; } .MuiGrid-grid-md-11 { flex-grow: 0; max-width: 91.666667%; flex-basis: 91.666667%; } .MuiGrid-grid-md-12 { flex-grow: 0; max-width: 100%; flex-basis: 100%; } } @media (min-width:1280px) { .MuiGrid-grid-lg-auto { flex-grow: 0; max-width: none; flex-basis: auto; } .MuiGrid-grid-lg-true { flex-grow: 1; max-width: 100%; flex-basis: 0; } .MuiGrid-grid-lg-1 { flex-grow: 0; max-width: 8.333333%; flex-basis: 8.333333%; } .MuiGrid-grid-lg-2 { flex-grow: 0; max-width: 16.666667%; flex-basis: 16.666667%; } .MuiGrid-grid-lg-3 { flex-grow: 0; max-width: 25%; flex-basis: 25%; } .MuiGrid-grid-lg-4 { flex-grow: 0; max-width: 33.333333%; flex-basis: 33.333333%; } .MuiGrid-grid-lg-5 { flex-grow: 0; max-width: 41.666667%; flex-basis: 41.666667%; } .MuiGrid-grid-lg-6 { flex-grow: 0; max-width: 50%; flex-basis: 50%; } .MuiGrid-grid-lg-7 { flex-grow: 0; max-width: 58.333333%; flex-basis: 58.333333%; } .MuiGrid-grid-lg-8 { flex-grow: 0; max-width: 66.666667%; flex-basis: 66.666667%; } .MuiGrid-grid-lg-9 { flex-grow: 0; max-width: 75%; flex-basis: 75%; } .MuiGrid-grid-lg-10 { flex-grow: 0; max-width: 83.333333%; flex-basis: 83.333333%; } .MuiGrid-grid-lg-11 { flex-grow: 0; max-width: 91.666667%; flex-basis: 91.666667%; } .MuiGrid-grid-lg-12 { flex-grow: 0; max-width: 100%; flex-basis: 100%; } } @media (min-width:1920px) { .MuiGrid-grid-xl-auto { flex-grow: 0; max-width: none; flex-basis: auto; } .MuiGrid-grid-xl-true { flex-grow: 1; max-width: 100%; flex-basis: 0; } .MuiGrid-grid-xl-1 { flex-grow: 0; max-width: 8.333333%; flex-basis: 8.333333%; } .MuiGrid-grid-xl-2 { flex-grow: 0; max-width: 16.666667%; flex-basis: 16.666667%; } .MuiGrid-grid-xl-3 { flex-grow: 0; max-width: 25%; flex-basis: 25%; } .MuiGrid-grid-xl-4 { flex-grow: 0; max-width: 33.333333%; flex-basis: 33.333333%; } .MuiGrid-grid-xl-5 { flex-grow: 0; max-width: 41.666667%; flex-basis: 41.666667%; } .MuiGrid-grid-xl-6 { flex-grow: 0; max-width: 50%; flex-basis: 50%; } .MuiGrid-grid-xl-7 { flex-grow: 0; max-width: 58.333333%; flex-basis: 58.333333%; } .MuiGrid-grid-xl-8 { flex-grow: 0; max-width: 66.666667%; flex-basis: 66.666667%; } .MuiGrid-grid-xl-9 { flex-grow: 0; max-width: 75%; flex-basis: 75%; } .MuiGrid-grid-xl-10 { flex-grow: 0; max-width: 83.333333%; flex-basis: 83.333333%; } .MuiGrid-grid-xl-11 { flex-grow: 0; max-width: 91.666667%; flex-basis: 91.666667%; } .MuiGrid-grid-xl-12 { flex-grow: 0; max-width: 100%; flex-basis: 100%; } } .jss2 { color: #fff; z-index: 1300; position: relative; padding-top: 1.5rem; padding-bottom: 1.5rem; background-color: #0d224c; } @media (max-width:599.95px) { .jss3 { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; } } @media (min-width:600px) { .jss3 { flex-shrink: 0; } } @media (max-width:599.95px) { .jss4 { margin-top: 1.5rem; flex-shrink: 0; } } @media (min-width:600px) { .jss5 { display: flex; align-items: center; justify-content: space-between; } } @media (min-width:600px) { .jss6 { margin-right: 1.5rem; } } @media (max-width:599.95px) { .jss7 { margin-top: 1.5rem; flex-shrink: 0; margin-right: 1rem; } } @media (min-width:600px) { .jss7 { margin-right: 1.5rem; } } .jss8 { margin-top: 1rem; } .jss1 { clip: rect(0 0 0 0); color: #000; width: 1px; height: 1px; display: block; overflow: hidden; position: absolute; clip-path: inset(50%); padding-top: 0.5rem; white-space: nowrap; padding-bottom: 0.5rem; text-decoration: unset; background-color: #fd6; } .jss1:focus { clip: unset; width: unset; height: unset; outline: .25rem solid transparent; overflow: unset; position: unset; clip-path: unset; white-space: unset; } .jss35 > * { box-sizing: border-box; font-family: Roboto; } .jss36 { padding-top: 1.5rem; padding-bottom: 2.5rem; } .jss37 { padding-top: 2.5rem; padding-bottom: 2.5rem; } .jss38 { padding-top: 1.5rem; padding-bottom: 2.5rem; } .jss39 { color: #fff; } .jss40 { background-color: #4c4c4c; } .jss41 { background-color: #404040; } .jss42 { background-color: #333; } .jss43 { display: inline; } .jss44:link { color: #fff; text-decoration: none; } .jss44:visited { color: #fff; } .jss44:focus { color: #000; outline: .25rem solid transparent; box-shadow: 0 .25rem 0 0 #fd6, 0 -.25rem 0 0 #fd6; text-decoration: none; background-color: #fd6; } .jss44:hover { color: #d9d9d9; transition: color .2s ease; text-decoration: underline; } .jss44:focus:hover { color: #000; outline: .25rem solid transparent; box-shadow: 0 .25rem 0 0 #fd6, 0 -.25rem 0 0 #fd6; text-decoration: none; background-color: #fd6; } .jss44:active { color: #fff; } .jss44:focus:active { color: #fff; outline: none; box-shadow: none; text-decoration: underline; background-color: transparent; } .jss45 { margin: 0; display: inline; padding: 0; list-style: none; } .jss46 { display: inline-block; font-size: .875rem; margin-top: 1rem; font-weight: 400; line-height: 1.428571428571429rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss46 b { font-weight: bolder; } .jss46 strong { font-weight: bolder; } .jss46:not(:last-child) { margin-right: 1rem; } .jss47::before { content: ">"; margin-right: 1rem; } .jss48 { width: calc(100% + 1.5rem); margin-left: -0.75rem; margin-right: -0.75rem; } .jss48 .MuiGrid-item { padding-left: 0.75rem; padding-right: 0.75rem; } @media (max-width:959.95px) { .jss48 { width: calc(100% + 1rem); margin-left: -0.5rem; margin-right: -0.5rem; } .jss48 .MuiGrid-item { padding-left: 0.5rem; padding-right: 0.5rem; } } .jss49 { padding-top: 0; padding-bottom: 0; } .jss50 { font-size: .875rem; font-weight: 400; line-height: 1.428571428571429rem; padding-top: 1rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss50 b { font-weight: bolder; } .jss50 strong { font-weight: bolder; } @media (max-width:599.95px) { .jss50 { border-top: .0625rem solid #707070; padding-top: 1.5rem; } } .jss51 { list-style: none; margin-top: 1.5rem; padding-left: 0; margin-bottom: 0; } @media (max-width:599.95px) { .jss52 { margin-top: 3rem; } } .jss53 { font-size: 1rem; font-family: "Roboto", "Helvetica", "Arial", sans-serif; font-weight: 500; line-height: 1.5rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } @media (min-width:960px) { .jss53 { font-size: 1.25rem; line-height: 2rem; } } .jss53 b { font-weight: bolder; } .jss53 strong { font-weight: bolder; } .jss54 { font-size: .875rem; font-weight: 400; line-height: 1.428571428571429rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss54 b { font-weight: bolder; } .jss54 strong { font-weight: bolder; } .jss54:not(:first-child) { margin-top: 1rem; } .jss55 { margin-right: 0.5rem; } .jss56 { display: flex; flex-wrap: wrap; list-style: none; margin-top: 0; padding-left: 0; margin-bottom: 0; } .jss57 { margin-bottom: 0; } @media (max-width:599.95px) { .jss57 { margin-bottom: 1.5rem; } } .jss58 { font-size: .875rem; margin-top: 1rem; font-weight: 400; line-height: 1.428571428571429rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss58 b { font-weight: bolder; } .jss58 strong { font-weight: bolder; } .jss58:not(:last-child) { margin-right: 1.5rem; } .jss59 { font-size: .875rem; font-weight: 400; line-height: 1.428571428571429rem; padding-top: 1.5rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss59 b { font-weight: bolder; } .jss59 strong { font-weight: bolder; } @media (max-width:599.95px) { .jss59 { border-top: .0625rem solid #707070; } } .jss60:link { color: #fff; text-decoration: underline; } .jss60:visited { color: #d9d9d9; } .jss60:focus { color: #000; outline: .25rem solid transparent; box-shadow: 0 .25rem 0 0 #fd6, 0 -.25rem 0 0 #fd6; text-decoration: none; background-color: #fd6; } .jss60:hover { color: #d9d9d9; transition: color .2s ease; text-decoration: underline; } .jss60:focus:hover { color: #000; outline: .25rem solid transparent; box-shadow: 0 .25rem 0 0 #fd6, 0 -.25rem 0 0 #fd6; text-decoration: none; background-color: #fd6; } .jss60:active { color: #fff; } .jss60:focus:active { color: #fff; outline: none; box-shadow: none; text-decoration: underline; background-color: transparent; } .jss9 { z-index: 1100; position: relative; } .jss10 { color: #666; background-color: #fff; } @media (min-width:600px) { .jss10 { padding-top: 0.5rem; padding-bottom: 0.5rem; } } @media (max-width:599.95px) { .jss11::before { content: ''; display: table; } .jss11::after { clear: both; content: ''; display: table; } } @media (min-width:600px) { .jss11 { display: flex; justify-content: space-between; } } @media (max-width:599.95px) { .jss12 { float: left; } } .jss13 { display: flex; } .jss14 { line-height: 0; } .jss15 { margin-left: 16px; } @media (max-width:599.95px) { .jss15 { margin-top: 1rem; } } @media (min-width:600px) { .jss15 { margin-top: .625rem; } } @media (max-width:599.95px) { .jss16 { font-size: 1rem; font-family: "Roboto", "Helvetica", "Arial", sans-serif; font-weight: 400; line-height: 1.5rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss16 b { font-weight: bolder; } .jss16 strong { font-weight: bolder; } } @media (min-width:600px) { .jss16 { font-size: 1.25rem; font-family: "Roboto", "Helvetica", "Arial", sans-serif; font-weight: 400; line-height: 2rem; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss16 b { font-weight: bolder; } .jss16 strong { font-weight: bolder; } } .jss17 { margin-right: 3px; } @media (max-width:599.95px) { .jss18 { clip: rect(0 0 0 0); width: 1px; height: 1px; overflow: hidden; position: absolute; clip-path: inset(50%); white-space: nowrap; } } @media (min-width:600px) { .jss18 { font-size: 1.25rem; font-family: "Roboto", "Helvetica", "Arial", sans-serif; font-weight: 400; line-height: 2rem; margin-left: 3px; letter-spacing: unset; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } .jss18 b { font-weight: bolder; } .jss18 strong { font-weight: bolder; } } .jss19 { clip: rect(0 0 0 0); width: 1px; height: 1px; overflow: hidden; position: absolute; clip-path: inset(50%); white-space: nowrap; } .jss20:link { color: #666; text-decoration: unset; } .jss20:visited { color: #666; } .jss20:focus { color: #000; outline: .25rem solid transparent; box-shadow: 0 .25rem 0 0 #fd6, 0 -.25rem 0 0 #fd6; text-decoration: none; background-color: #fd6; } .jss20:focus:not(:focus-visible) { outline: .25rem solid transparent; box-shadow: unset; text-decoration: underline; background-color: unset; } .jss20:hover { color: #004777; text-decoration: underline; } .jss20:active { color: #000; text-decoration: underline; } @media (hover: none) { .jss20:hover { color: #666; } } @media (max-width:599.95px) { .jss21 { width: 2.5rem; height: 2.5rem; } } @media (min-width:600px) { .jss21 { width: 3.25rem; height: 3.25rem; } } .jss22 { display: inline-block; } @media (max-width:599.95px) { .jss22 { margin-top: 0.5rem; margin-bottom: 0.5rem; } } .jss22:focus { outline: .25rem solid #fd6; } .jss22:focus:not(:focus-visible) { outline: none; } .jss22:hover { opacity: 0.7; } .jss22:active { opacity: 1; } @media (hover: none) { .jss22:hover { opacity: 1; } } .jss23 { margin-left: 8px; } @media (max-width:599.95px) { .jss23 { float: right; margin-top: .625rem; margin-bottom: 0.5rem; } } .jss26 { display: flex; position: relative; align-items: center; margin-left: auto; } @media (max-width: 757px) { .jss26 { top: 100%; right: 0; display: none; padding: 1.8rem; position: absolute; border-top: 1px solid #ccc; box-shadow: 0px 5px 4px rgb(0 0 0 / 20%); -moz-box-shadow: 0px 5px 4px rgba(0,0,0,0.2); background-color: #fff; -webkit-box-shadow: 0px 5px 4px rgb(0 0 0 / 20%); } } @media (max-width: 400px) { .jss26 { left: 0; } } @media (max-width: 757px) { .jss26.visible { display: block; } } .jss27 { color: #666; display: block; font-size: 18px; text-decoration: unset; } .jss27:hover { color: #004777; text-decoration: underline; } .jss27:focus { color: #000; outline: transparent solid 0.25rem; box-shadow: rgb(255 221 102) 0px 0.25rem 0px 0px, rgb(255 221 102) 0px -0.25rem 0px 0px; text-decoration: none; background-color: rgb(255, 221, 102); } .jss28 { top: 100%; right: 0; width: 600px; display: none; padding: 20px 30px; position: absolute; border-top: 2px solid #00557f; box-shadow: 0px 5px 4px rgb(0 0 0 / 20%); text-align: center; -moz-box-shadow: 0px 5px 4px rgba(0,0,0,0.2); background-color: #fff; -webkit-box-shadow: 0px 5px 4px rgb(0 0 0 / 20%); } @media (max-width: 757px) { .jss28 { display: none; } } .jss29 { top: 50%; color: #2c3841; right: 1.8rem; width: 32px; border: none; bottom: 0; cursor: pointer; height: 32px; display: flex; position: absolute; transform: translateY(-50%); align-items: center; justify-content: center; background-color: transparent; } @media (min-width: 757px) { .jss29 { right: 10px; } } .jss29:hover { opacity: 0.5; } .jss29:focus { outline: .25rem solid #fd6; background-color: #fff; } @media (max-width: 757px) { .jss30 { width: 100%; } } @media (min-width: 757px) { .jss30:focus-within #predictive-results.visible { display: block; } } @media (min-width: 757px) { .jss31 { padding: 10px 10px; position: relative; margin-right: -10px; } .jss31.has-search-term:focus-within { box-shadow: 0 0 2px rgb(0 0 0 / 20%); -moz-box-shadow: 0 0 2px rgba(0,0,0,0.2); background-image: linear-gradient(to bottom,#e4e9ec 0%,#fff 100%); -webkit-box-shadow: 0 0 2px rgb(0 0 0 / 20%); } } .jss32 { width: 210px; border: 2px solid #E4E9EC; display: block; padding: 5px 32px 4px 9px; min-height: 31px; background-color: #fff; } .jss32:focus { outline: .25rem solid #fd6; background-color: #fff; } .jss32::-webkit-search-cancel-button, .jss32::-webkit-search-decoration, .jss32 -webkit-search-results-button, .jss32 -webkit-search-results-decoration { display: none; } .jss32::-ms-clear { width: 0; height: 0; display: none; } .jss32::-ms-reveal { width: 0; height: 0; display: none; } .jss32:-webkit-autofill, .jss32:-webkit-autofill:hover, .jss32:-webkit-autofill:active, .jss32:-webkit-autofill:focus { -webkit-box-shadow: 0 0 0px 1000px #fff inset; } @media (max-width: 757px) { .jss32 { width: 100%; } } .jss33 span { clip: rect(0 0 0 0); width: 1px; height: 1px; overflow: hidden; position: absolute; clip-path: inset(50%); white-space: nowrap; } .jss24 { display: none; align-items: center; margin-left: auto; justify-content: center; } @media (max-width: 757px) { .jss24 { gap: 8px; display: flex; } } @media (min-width:600px) { .jss24 { margin-top: 0.5rem; } } .jss25 { color: #069; width: 36px; border: none; height: 36px; justify-content: center; background-color: #e4e9ec; } .jss25:hover { color: #fff; cursor: pointer; background-color: #069; } .jss25:focus { color: #fff; outline: .25rem solid #fd6; outline-offset: -2px; background-color: #069; }</style><style 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px-3 py-1 font-sans text-[1rem] font-normal antialiased leading-[1.5rem] text-jiscWhite bg-jiscHibiscus">Quick guide</span><div class="box-border flex flex-wrap w-[calc(100%+1rem)] -mx-2 md:w-[calc(100%+1.5rem)] md:-mx-3 " data-testclass="grid"><div class="box-border block w-full px-2 sm:w-10/12 sm:ml-[calc(1/12*100%)] md:px-3 " data-testclass="grid-item"><div><h1 class="my-6 font-sans text-[2.5rem] font-normal antialiased leading-[3.5rem] sm:text-[2.75rem] md:text-[3rem] md:leading-[4rem]" id="guidePageHeaderTitle">Using the Janet Network performance test facilities</h1></div><p class="my-4 font-sans text-[1rem] font-normal antialiased ">Last updated: <time datetime="2023-05-23T14:51:00Z">23 May 2023</time></p><p class="mt-6 mb-[unset] font-sans text-[1.25rem] font-light antialiased leading-[2rem] sm:w-1/2 sm:min-w-full sm:mt-[unset]">How members can use Jisc's network performance test servers to diagnose and troubleshoot their network issues.</p></div></div></div></header><div 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after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mb-6 |"><p data-block-key="mbduk"></p><h2 id="overview-17jk7" data-block-key="17jk7">Overview</h2><p data-block-key="re3c">Our test systems are hosted at two points of presence (PoPs) on the Janet backbone: those at our Slough data centre (DC) run at 10Gbit/s, while our newer facility at London is connected at up to 100Gbit/s. </p><p data-block-key="d5f8b">All our servers support both IPv4 and IPv6, and all support 9000 MTU. </p><p data-block-key="45o21">All Jisc network test facility servers and services run under the domain perf.ja.net. </p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscWhite bg-jiscBrandBlue-dark " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscWhite prose-a:underline | visited:prose-a:text-jiscAlto | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscAlto | active:prose-a:text-jiscWhite | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscWhite | prose-strong:visited:prose-a:text-jiscAlto | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscAlto | prose-strong:active:prose-a:text-jiscWhite || prose-blockquote:border-l-jiscWhite || marker:text-jiscWhite | prose-blockquote:text-jiscWhite | prose-headings:text-jiscWhite | prose-li:text-jiscWhite | prose-ol:text-jiscWhite | prose-p:text-jiscWhite | prose-strong:text-jiscWhite | prose-table:text-jiscWhite | prose-ul:text-jiscWhite | | |"><p data-block-key="jrm2j"><strong>Top tip:</strong> To obtain the best performance results, it is important to tune the system you are using to run your tests. There is useful <a href="http://web.archive.org/web/20240227040306/https://fasterdata.es.net/">Fasterdata guidance</a>, in particular under the host tuning section, and for good end-to-end performance you should also take note of the network and Science DMZ sections. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 mb-6 |"><p data-block-key="5bo7e"></p><h2 id="iperf-5tduk" data-block-key="5tduk">iperf</h2><p data-block-key="3vc0n">The commonly used iperf tool is generally used to test available throughput from a client to a server, or from the server back to the client. The test defaults to using TCP. </p><p data-block-key="5h8im">There are two versions of iperf, developed and maintained separately, and we support both. </p><p data-block-key="cjq3o"><strong>iperf2</strong></p><p data-block-key="7a0cq">This runs on its default port 5001. The client ships with many OSes, but the most recent version is available from <a href="http://web.archive.org/web/20240227040306/https://sourceforge.net/projects/iperf2/files/">sourceforge.net</a>.</p><p data-block-key="9iorq"><strong>iperf3</strong></p><p data-block-key="8pu24">This also runs on its default port 5201. You can download the client for a wide variety of OSes including mobile platforms. <a href="http://web.archive.org/web/20240227040306/https://iperf.fr/iperf-download.php">Download at iperf.fr</a>.</p><p data-block-key="c4i96">To test against the Slough server you can test with either iperf2 or iperf3 to the server name iperf-slough-10g.perf.ja.net.</p><p data-block-key="6sb0s"></p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscMineShaft bg-jiscConcrete " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | |"><h3 data-block-key="ttp2m">Example iperf2 test</h3><p data-block-key="3s88m">The following shows iperf2 being run from another Jisc server to the iperf endpoint:</p><p data-block-key="catdl">$ iperf –c iperf-slough-10g.perf.ja.net<br/>------------------------------------------------------------<br/>Client connecting to iperf-slough-10g.perf.ja.net, TCP port 5001<br/>TCP window size: 11.1 MByte (default)<br/>------------------------------------------------------------<br/>[ 3] local 194.81.18.227 port 47990 connected with 194.81.18.231 port 5001<br/>[ ID] Interval Transfer Bandwidth<br/>[ 3] 0.0-10.0 sec 11.5 GBytes 9.90 Gbits/sec</p><p data-block-key="27anb">To test in the reverse path from the server to the client you can use the --reverse option; this is useful if you wish to test throughput into your site. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 mb-6 |"><p data-block-key="44ogf"></p><p data-block-key="bgfh1">Whether a single stream test can fill a link depends on the operating system, the link capacity, the server hardware and the server (TCP) tuning. For most Linux cases, it should be possible to drive 10Gbit/s with a single iperf stream. If not, it is also possible to run multi-stream tests which should achieve greater performance, particularly if there is some packet loss on the path. </p><p data-block-key="c11nt"></p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscWhite bg-jiscBrandBlue-dark " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscWhite prose-a:underline | visited:prose-a:text-jiscAlto | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscAlto | active:prose-a:text-jiscWhite | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscWhite | prose-strong:visited:prose-a:text-jiscAlto | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscAlto | prose-strong:active:prose-a:text-jiscWhite || prose-blockquote:border-l-jiscWhite || marker:text-jiscWhite | prose-blockquote:text-jiscWhite | prose-headings:text-jiscWhite | prose-li:text-jiscWhite | prose-ol:text-jiscWhite | prose-p:text-jiscWhite | prose-strong:text-jiscWhite | prose-table:text-jiscWhite | prose-ul:text-jiscWhite | | |"><p data-block-key="jrm2j"><strong>Top tip:</strong> We recommend using perfSONAR if you wish to measure throughput periodically over the long-term or run non-contending throughput tests. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 mb-6 |"><p data-block-key="dl7s4">We support iperf testing at rates over 10Gbit/s and up to 100Gbit/s at our London PoP, but this is currently only available on request to <a href="http://web.archive.org/web/20240227040306/mailto:netperf@jisc.ac.uk">netperf@jisc.ac.uk</a>. In this case, using multi-stream tests will likely be required to fill the higher capacity path. </p><h2 id="ethr-1tugv" data-block-key="1tugv">Ethr</h2><p data-block-key="cnbag"><a href="http://web.archive.org/web/20240227040306/https://github.com/microsoft/ethr">Ethr</a> is an alternative network performance test tool, written in Go. We provide an endpoint at our Slough PoP running at ethr-slough-10g.perf.ja.net. </p><p data-block-key="fdgn8">Distributions of ethr are available on GitHub, where the README provides instructions for Windows, Linux and macOS. <a href="http://web.archive.org/web/20240227040306/https://snapcraft.io/install/ethr-johanburati/centos">Find out specific CentOS instalaltion information</a>.</p><p data-block-key="et0u"></p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscMineShaft bg-jiscConcrete " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | |"><h3 data-block-key="75c8x">Example Ethr test</h3><p data-block-key="33h13">The syntax to run the test is similar to iperf, and full options can be seen with ethr –h</p><p data-block-key="f181l">$ ethr -c ethr-slough-10g.perf.ja.net<br/>Connecting to host [2001:630:3c:f803::12], port 9999<br/>[ 6] local 2001:630:3c:f803::6 port 55644 connected to 2001:630:3c:f803::12 port 9999</p><p data-block-key="co9go">- - - - - - - - - - - - - - - - - - - - - - -<br/>[ ID] Protocol Interval Bits/s<br/>[ 6] TCP 000-001 sec 9.55G<br/>[ 6] TCP 001-002 sec 9.89G<br/>[ 6] TCP 002-003 sec 9.67G<br/>[ 6] TCP 003-004 sec 9.31G<br/>[ 6] TCP 004-005 sec 9.88G<br/>[ 6] TCP 005-006 sec 9.84G<br/>[ 6] TCP 006-007 sec 9.78G<br/>[ 6] TCP 007-008 sec 9.87G<br/>[ 6] TCP 008-009 sec 9.88G<br/>[ 6] TCP 009-010 sec 9.72G</p><p data-block-key="d8h1v"></p><p data-block-key="av5vv">Ethr done, duration: 10s.</p><p data-block-key="8eps2">The ethr output looks more like that of iperf3, with per-second reporting by default. </p><p data-block-key="el1k9">Note that as per iperf, our ethr server at Slough may be in use by other users when you test, so you may not see the maximum available capacity at any given time. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 mb-6 |"><p data-block-key="ajdfm"></p><p data-block-key="162k8"></p><h2 id="perfsonar-86v56" data-block-key="86v56">perfSONAR</h2><p data-block-key="1b2ag">An iperf or Ethr test only tests performance at a specific moment in time, just as a ping or traceroute test only shows you the current round-trip time, loss or path. </p><p data-block-key="2d3ll">In contrast, perfSONAR provides a means to measure a range of network characteristics over time, to record them, and to use that history of measurements to better diagnose or troubleshoot performance issues. By default, perfSONAR runs latency, loss and path tests continuously and throughput tests every 6 hours. </p><p data-block-key="6u71j"></p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscWhite bg-jiscBrandBlue-dark " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscWhite prose-a:underline | visited:prose-a:text-jiscAlto | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscAlto | active:prose-a:text-jiscWhite | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscWhite | prose-strong:visited:prose-a:text-jiscAlto | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscAlto | prose-strong:active:prose-a:text-jiscWhite || prose-blockquote:border-l-jiscWhite || marker:text-jiscWhite | prose-blockquote:text-jiscWhite | prose-headings:text-jiscWhite | prose-li:text-jiscWhite | prose-ol:text-jiscWhite | prose-p:text-jiscWhite | prose-strong:text-jiscWhite | prose-table:text-jiscWhite | prose-ul:text-jiscWhite | | |"><p data-block-key="j7qbx"><strong>Top tip:</strong> We recommend sites run at least one perfSONAR server. The software documentation discusses positioning, but this would typically be at your network edge, or alongside the main filestore you run data transfers to/from. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 mb-6 |"><p data-block-key="73flp"></p><p data-block-key="85o04">The <a href="http://web.archive.org/web/20240227040306/https://www.perfsonar.net/">perfSONAR software</a> is open source and runs on a variety of Linux platforms. A new major version, 5.0, was released in April 2023. <a href="http://web.archive.org/web/20240227040306/https://docs.perfsonar.net/">Read documentation about perfSONAR</a>.</p><p data-block-key="cavov">The software is usually run on a dedicated physical server, but you can use a VM or container.</p><p data-block-key="dqmtd">View guidance on:</p><ul><li data-block-key="r39c"><a href="http://web.archive.org/web/20240227040306/https://hub.docker.com/r/perfsonar/testpoint/">Docker information</a></li><li data-block-key="9keim"><a href="http://web.archive.org/web/20240227040306/https://docs.perfsonar.net/install_hardware.html">perfSONAR hardware guidance</a></li></ul><p data-block-key="b3to6">To minimise interference between tests you should use two separate network interfaces for the server, one for throughput tests, one for latency/loss tests. </p><p data-block-key="c0299">There are multiple perfSONAR components that can be installed. The simplest is to install the tools and testpoint packages, such that your server can run tests and report them to another server that archives the results into OpenSearch. The ‘core’ package will additionally allow local archiving, while the full toolkit install will give all functionality. <a href="http://web.archive.org/web/20240227040306/https://docs.perfsonar.net/install_options.html">Read guidance on perfSONAR installation options</a>. </p><p data-block-key="269ds">perfSONAR servers running the toolkit will need a certificate. We recommend you use a certificate that is signed by an authority trusted by browsers, such as certificates issued by the Jisc certificate service or Let’s Encrypt, rather than self-signed. </p><p data-block-key="5aurf">Once installed, you can configure persistent throughput and latency/loss tests to our Jisc perfSONAR servers. You should run throughput tests to the throughput interface, and latency tests to the latency interface. </p><p data-block-key="af7up">Slough DC, running at up to 10Gbit/s: </p><ul><li data-block-key="5urnb">Throughput interface - ps-slough-bw.perf.ja.net</li><li data-block-key="38qn3">Latency interface - ps-slough-lat.perf.ja.net</li></ul><p data-block-key="b0lpr">London PoP, running at up to 100Gbit/s: </p><ul><li data-block-key="64rsh">Throughput interface - ps-london-bw.perf.ja.net</li><li data-block-key="3nc73">Latency interface - ps-london-lat.perf.ja.net</li></ul><p data-block-key="7mt8m">perfSONAR uses a tool called pscheduler to ensure that throughput tests do not overlap or contend with other tests, so you should have the full capacity of the link available for your measurements. </p><p data-block-key="99o75">You can also run third-party tests with pscheduler, between two remote perfSONAR servers, if they are configured (via the limits file) to be open, for example: </p><p data-block-key="98dp0">$ pscheduler task throughput --source HOST1 --dest HOST2 </p><p data-block-key="e14nh">While tests can be configured to run persistently to/from any given perfSONAR server, it is also possible to create a ‘mesh’ of servers for a community where each tests against the other. One example is the UK World Large Hadron Collider Computing Grid (WLCG) community, GridPP, which has a number of <a href="http://web.archive.org/web/20240227040306/https://psmad.opensciencegrid.org/maddash-webui/index.cgi?dashboard=UK%20Mesh%20Config">meshes for IPv4 and IPv6 testing</a>. Another is the <a href="http://web.archive.org/web/20240227040306/https://psmad.opensciencegrid.org/maddash-webui/index.cgi?dashboard=WLCG%20100G%20Mesh">WLCG 100G server mesh</a>. Jisc can assist with mesh configurations if required. Other servers can be found via the perfSONAR lookup service. </p><h2 id="data-transfer-node-(dtn)-tests-1f2pu" data-block-key="1f2pu">Data Transfer Node (DTN) tests</h2><p data-block-key="3uukk">Jisc hosts data transfer nodes (DTNs) for application-oriented testing. We can install and support any specific data transfer tools on request. </p><p data-block-key="e02s3">Currently our Slough DC has a Globus endpoint, running at dtn-slough-10g.perf.ja.net, which is connected at 10Gbit/s.</p><p data-block-key="5ek8b">The basic Globus transfer tools can be run without a Globus licence/subscription. </p><p data-block-key="a7r1i">A variety of files is available for testing Globus with globus-url-copy: 1M.dat, 2M.dat, 10M.dat, 50M.dat, 1G.dat, 10G.dat, 20G.dat, 100G.dat, 1000G.dat </p><p data-block-key="b9j24">You can copy to /dev/null or to the file system, for example, copying a 10GB file to /dev/null: </p><p data-block-key="2ln8m">$ globus-url-copy -vb ftp://dtn-slough-10g.perf.ja.net:2811/space00/10G.dat /dev/null </p><p data-block-key="72p5d">There is also a directory with 100 x 1GB files for more sustained testing: </p><p data-block-key="a1ei1">$ globus-url-copy -r -vb ftp://dtn-slough-10g.perf.ja.net:2811/space00/small/ file:///tmp/ </p><p data-block-key="96n6g">We also have a 100G DTN at our London PoP. Please email <a href="http://web.archive.org/web/20240227040306/mailto:netperf@jisc.ac.uk">netperf@jisc.ac.uk</a> if you wish to test against this. </p><h2 id="ripe-atlas-anchor-eslo" data-block-key="eslo">RIPE Atlas anchor</h2><p data-block-key="aj9f">The <a href="http://web.archive.org/web/20240227040306/https://atlas.ripe.net/">RIPE Atlas project</a> has grown to over 10,000 measurement devices worldwide, and now supports both physical (small form factor USB/Ethernet) and virtual clients. These can be used to run lightweight tests such as latency, loss, HTTP and DNS between clients and anchors. </p><p data-block-key="839sj">Jisc runs a (physical) anchor at our Slough DC which has a web interface available at <a href="http://web.archive.org/web/20240227040306/https://atlas.ripe.net/probes/6695/">RIPE Atlas</a>. At the time of writing there are some 6,000 tests being run against the anchor. </p><h2 id="tools-in-development-b77uc" data-block-key="b77uc">Tools in development</h2><p data-block-key="1gbpg">We are currently looking to deploy an HTTP-based ‘speedtest’ service, most likely using the <a href="http://web.archive.org/web/20240227040306/https://librespeed.org/">open source librespeed package</a>. There are other implementations available which we are also testing. </p><p data-block-key="bio9q">Such speedtests aren’t necessarily as accurate as the ones described above, but these are the types of tests that will most likely be run by users served by the Janet network, and in their home networks, because they are trivially easy to run from a browser without installing any local software. By providing a familiar tool we can also include pointers at the test pages towards the more advanced tools, and information describing the limitations of ‘speedtest’ servers. </p><p data-block-key="d2ahh">We are also following the latest developments in the IP Performance Measurement working group at the Internet Engineering Task Force (IETF) on a new ‘responsiveness’ test. The idea of the test is to measure how many responses per second a server can reply with, which is an indication of the potential buffering delays or ‘buffer bloat’ in a network path. </p><p data-block-key="9q0ud"></p></div><div class="pt-10 px-8 pb-10 mt-10 mb-10 text-jiscMineShaft bg-jiscConcrete " data-testid="boxed-content"><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | |"><h3 data-block-key="u3hmp">Example new ‘responsiveness’ test</h3><p data-block-key="5ps5g">Our iperf2 server supports the first implementation of this (as of iperf 2.1.9), which you can test with the –bounceback option, for example: </p><p data-block-key="5ohe">$iperf -c iperf-slough-10g.perf.ja.net -i 1 --bounceback</p><p data-block-key="7et50">The test reports RPS (responses per second), the higher the better. </p></div></div><div class=" clearfix | prose | antialiased | font-sans | max-w-full | prose-h2:text-[2rem] prose-h2:font-normal prose-h2:leading-[3.0rem] prose-h2:sm:text-[2.25rem] prose-h2:md:text-[2.5rem] prose-h2:md:leading-[3.5rem] | prose-h2:mt-10 prose-h2:mb-6 first:prose-h2:mt-0 last:prose-h2:mb-0 prose-h3:text-[1.5rem] prose-h3:font-medium prose-h3:leading-[2rem] first:prose-h3:mt-0 last:prose-h3:mb-0 prose-h3:mt-10 prose-h3:mb-6 prose-h3:sm:text-[1.75rem] prose-h3:sm:leading-[2.5rem] prose-h3:md:text-[2rem] prose-h3:md:leading-[3rem] | prose-h4:text-[1.25rem] prose-h4:font-normal prose-h4:leading-[2rem] first:prose-h4:mt-0 last:prose-h4:mb-0 prose-h4:mt-10 prose-h4:mb-6 prose-h4:md:text-[1.5rem] prose-h4:md:leading-[2rem] | prose-h5:text-[1rem] prose-h5:font-medium prose-h5:leading-[1.5rem] prose-h5:mt-10 prose-h5:mb-6 first:prose-h5:mt-[unset] last:prose-h5:mb-[unset] prose-h5:md:text-[1.25rem] prose-h5:md:leading-[2rem] prose-h6:text-[1rem] prose-h6:font-semibold prose-h6:leading-[1.5rem] prose-h6:mt-10 prose-h6:mb-6 first:prose-h6:mt-[unset] last:prose-h6:mb-[unset] prose-p:my-6 prose-p:text-[1rem] prose-p:font-normal prose-p:leading-[1.5rem] first:prose-p:mt-[unset] last:prose-p:mb-[unset] empty:first:prose-p:-mt-6 prose-blockquote:my-[unset] prose-blockquote:ml-6 prose-blockquote:text-[1rem] prose-blockquote:not-italic prose-blockquote:font-normal prose-blockquote:leading-[1.5rem] prose-blockquote:border-solid prose-blockquote:border-0 prose-blockquote:border-l-[.0625rem] prose-p:prose-blockquote:py-3 before:prose-p:prose-blockquote:content-[unset] after:prose-p:prose-blockquote:content-[unset] prose-li:text-[1rem] prose-li:font-normal prose-li:leading-[1.5rem] | first:prose-li:mt-2 prose-li:pl-2 | first:prose-ol:mt-0 last:prose-ol:mb-0 prose-ol:my-6 prose-ol:pl-8 prose-ol:leading-[1.5rem] | first:prose-ul:mt-0 last:prose-ul:mb-0 prose-ul:my-6 prose-ul:pl-8 prose-ul:leading-[1.5rem] | prose-table:leading-[1.5rem] | prose-table:mt-[unset] prose-table:mb-[unset] | prose-table:border-collapse | prose-p:prose-td:text-[0.875rem] | prose-p:prose-th:text-[0.875rem] | prose-li:prose-th:text-[0.875rem] | prose-li:prose-td:text-[0.875rem] | prose-td:border-solid prose-td:border-l-[0rem] prose-td:border-r-[0rem] prose-td:border-jiscAlto | prose-td:border-b-[0.0625rem] prose-td:border-t-[0.0625rem] | prose-td:p-4 prose-td:align-middle prose-td:leading-[1.5rem]| prose-th:border-solid prose-th:border-l-[0rem] prose-th:border-r-[0rem] prose-th:border-jiscAlto | prose-th:border-b-[0.0625rem] prose-th:border-t-[0.0625rem] prose-th:border-b-jiscAlto prose-th:border-t-jiscAlto | prose-th:p-4 prose-th:align-middle prose-th:leading-[1.5rem] | prose-th:font-medium | prose-tr:border-b-jiscAlto prose-tr:border-t-jiscAlto | prose-img:block prose-img:max-w-full prose-img:h-auto prose-img:my-6 prose-img:leading-none | prose-a:font-normal prose-a:text-jiscBahamaBlue prose-a:underline | visited:prose-a:text-jiscPurple | focus:prose-a:text-jiscBlack focus:prose-a:bg-jiscDandelion focus:prose-a:outline focus:prose-a:outline-4 focus:prose-a:outline-transparent focus:prose-a:no-underline focus:prose-a:shadow-[0_.25rem_0_0_#fd6,_0_-.25rem_0_0_#fd6] | hover:prose-a:text-jiscRegalBlue | active:prose-a:text-jiscBlack | focus:active:prose-a:underline focus:active:prose-a:bg-transparent focus:active:prose-a:shadow-none | prose-strong:prose-a:text-jiscBahamaBlue | prose-strong:visited:prose-a:text-jiscPurple | prose-strong:focus:prose-a:text-jiscBlack | prose-strong:hover:prose-a:text-jiscRegalBlue | prose-strong:active:prose-a:text-jiscBlack || prose-blockquote:border-l-jiscAlto || marker:text-jiscMineShaft | prose-blockquote:text-jiscDoveGrey | prose-headings:text-jiscMineShaft | prose-li:text-jiscMineShaft | prose-ol:text-jiscMineShaft | prose-p:text-jiscMineShaft | prose-strong:text-jiscMineShaft | prose-table:text-jiscMineShaft | prose-ul:text-jiscMineShaft | | mt-6 |"><p data-block-key="cvrsn"></p><h2 id="further-information-9k6uv" data-block-key="9k6uv">Further information</h2><p data-block-key="e3gfn">You may also find the following links useful: </p><ul><li data-block-key="7uhc"><a href="http://web.archive.org/web/20240227040306/https://www.jisc.ac.uk/guides/supporting-large-scale-data-transfers-on-janet">Jisc advice and guidance for large scale data transfers over Janet</a></li><li data-block-key="31l8j"><a href="http://web.archive.org/web/20240227040306/https://www.jisc.ac.uk/get-involved/research-network-engineering-community-group">Jisc Research Network Engineering community</a></li><li data-block-key="85upn"><a href="http://web.archive.org/web/20240227040306/https://fasterdata.es.net/">End-to-end performance tuning guidance</a></li></ul><h2 id="contact-us-6la5q" data-block-key="6la5q">Contact us</h2><p data-block-key="2gr6j">For any queries about the Jisc test facility systems (on their use or their configuration) please contact our network performance team at <a href="http://web.archive.org/web/20240227040306/mailto:netperf@jisc.ac.uk">netperf@jisc.ac.uk</a> or you can email <a href="http://web.archive.org/web/20240227040306/mailto:elp@jisc.ac.uk">help@jisc.ac.uk</a> to raise a ticket with our service desk. </p><p data-block-key="dnd4g">If there are any other network test servers or services you would like us to host then please get in touch with us.</p></div><div class="p-10 my-10 font-sans text-sm antialiased font-normal bg-jiscConcrete text-jiscMineShaft">This guide is made available under <a href="http://web.archive.org/web/20240227040306/https://creativecommons.org/licenses/by-nc-nd/4.0/">Creative Commons License (CC BY-NC-ND).</a></div></div></div></div></div></article></main><footer aria-labelledby="site-footer" class="jss35"><div class="jss39 jss36 jss40"><div class="MuiContainer-root MuiContainer-maxWidthMd"><div class="MuiGrid-root jss48 MuiGrid-container"><div class="MuiGrid-root jss49 MuiGrid-item MuiGrid-grid-xs-12 MuiGrid-grid-sm-9"><h2 class="MuiTypography-root MuiTypography-srOnly" id="site-footer">Site footer</h2><div class=""><nav 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issues.","first_published_at":"2023-05-23T14:51:00Z","alias_of":null,"parent":{"id":241,"meta":{"type":"base.GuideListingPage","detail_url":"http://web.archive.org/web/20240227040306/http://backend:8000/api/v2/pages/241/","html_url":"http://web.archive.org/web/20240227040306/https://www.jisc.ac.uk/guides/"},"title":"Guides"}},"title":"Using the Janet Network performance test facilities","categories":[{"id":1,"name":"Connectivity"}],"authors":[{"id":55,"meta":{"type":"base.GuideAuthorsOrderable"},"first_name":"Tim","last_name":"Chown","job_title":"Network development manager","bio_link":null,"summary":"\u003cp data-block-key=\"8b019\"\u003eI am responsible for developing and promoting new network-oriented services. Currently, my main focus lies with being a work package leader on the GÉANT GN4-3 project, which provides connectivity between European national research and education networks (NRENs) such as Janet, and evaluates new technologies and develops new services to run over that network, everything from perfSONAR network monitoring to quantum key distribution (QKD).\u003c/p\u003e\u003cp data-block-key=\"3aqdc\"\u003eMy main work within Jisc is helping members make optimal use of their Janet connectivity for network-intensive applications, as part of Jisc\u0026#x27;s end-to-end performance initiative.\u003c/p\u003e","image":{"url":"http://web.archive.org/web/20240227040306/https://jisc-ac-uk-static-assets-prod.s3.eu-west-1.amazonaws.com/media/original_images/tim-chown-300x300.jpg","title":"tim-chown-300x300","id":1158},"image_alt_text":"Tim Chown"},{"id":56,"meta":{"type":"base.GuideAuthorsOrderable"},"first_name":"Duncan","last_name":"Rand","job_title":"End-to-end performance adviser, Jisc","bio_link":null,"summary":"","image":{"url":"http://web.archive.org/web/20240227040306/https://jisc-ac-uk-static-assets-prod.s3.eu-west-1.amazonaws.com/media/original_images/web-author-avatar-green-400x400.jpg","title":"web-author-avatar-green","id":57},"image_alt_text":null},{"id":57,"meta":{"type":"base.GuideAuthorsOrderable"},"first_name":"Raul","last_name":"Lopes","job_title":"Janet end-to-end performance technical specialist","bio_link":null,"summary":"","image":{"url":"http://web.archive.org/web/20240227040306/https://jisc-ac-uk-static-assets-prod.s3.eu-west-1.amazonaws.com/media/original_images/web-author-avatar-jade-400x400.jpg","title":"web-author-avatar-jade","id":58},"image_alt_text":"\"\""}],"breadcrumbs":[{"id":1,"name":"Root","url":null},{"id":3,"name":"Jisc","url":"/"},{"id":241,"name":"Guides","url":"/guides/"},{"id":1971,"name":"Using the Janet Network performance test facilities","url":"/guides/using-the-janet-network-performance-test-facilities/"}],"copyright_banner":true,"last_published_at":"2023-12-21T09:47:09.239829Z","open_graph_image":null,"open_graph_image_alt":"","override_last_published_at":"2023-05-23T14:51:00Z","page_body":[{"type":"content_block","value":"\u003cp data-block-key=\"mbduk\"\u003e\u003c/p\u003e\u003ch2 id=\"overview-17jk7\" data-block-key=\"17jk7\"\u003eOverview\u003c/h2\u003e\u003cp data-block-key=\"re3c\"\u003eOur test systems are hosted at two points of presence (PoPs) on the Janet backbone: those at our Slough data centre (DC) run at 10Gbit/s, while our newer facility at London is connected at up to 100Gbit/s. \u003c/p\u003e\u003cp data-block-key=\"d5f8b\"\u003eAll our servers support both IPv4 and IPv6, and all support 9000 MTU. \u003c/p\u003e\u003cp data-block-key=\"45o21\"\u003eAll Jisc network test facility servers and services run under the domain perf.ja.net. \u003c/p\u003e","id":"4c0a4146-7ebb-46e0-8140-7345c222b801"},{"type":"boxed_content","value":{"background_option":"dark","custom_background_colour":"","content":"\u003cp data-block-key=\"jrm2j\"\u003e\u003cstrong\u003eTop tip:\u003c/strong\u003e To obtain the best performance results, it is important to tune the system you are using to run your tests. There is useful \u003ca href=\"https://fasterdata.es.net/\"\u003eFasterdata guidance\u003c/a\u003e, in particular under the host tuning section, and for good end-to-end performance you should also take note of the network and Science DMZ sections. \u003c/p\u003e"},"id":"90d4ca6f-6c2f-4bf2-8ab3-687b81ab5fb9"},{"type":"content_block","value":"\u003cp data-block-key=\"5bo7e\"\u003e\u003c/p\u003e\u003ch2 id=\"iperf-5tduk\" data-block-key=\"5tduk\"\u003eiperf\u003c/h2\u003e\u003cp data-block-key=\"3vc0n\"\u003eThe commonly used iperf tool is generally used to test available throughput from a client to a server, or from the server back to the client. The test defaults to using TCP. \u003c/p\u003e\u003cp data-block-key=\"5h8im\"\u003eThere are two versions of iperf, developed and maintained separately, and we support both. \u003c/p\u003e\u003cp data-block-key=\"cjq3o\"\u003e\u003cstrong\u003eiperf2\u003c/strong\u003e\u003c/p\u003e\u003cp data-block-key=\"7a0cq\"\u003eThis runs on its default port 5001. The client ships with many OSes, but the most recent version is available from \u003ca href=\"https://sourceforge.net/projects/iperf2/files/\"\u003esourceforge.net\u003c/a\u003e.\u003c/p\u003e\u003cp data-block-key=\"9iorq\"\u003e\u003cstrong\u003eiperf3\u003c/strong\u003e\u003c/p\u003e\u003cp data-block-key=\"8pu24\"\u003eThis also runs on its default port 5201. You can download the client for a wide variety of OSes including mobile platforms. \u003ca href=\"https://iperf.fr/iperf-download.php\"\u003eDownload at iperf.fr\u003c/a\u003e.\u003c/p\u003e\u003cp data-block-key=\"c4i96\"\u003eTo test against the Slough server you can test with either iperf2 or iperf3 to the server name iperf-slough-10g.perf.ja.net.\u003c/p\u003e\u003cp data-block-key=\"6sb0s\"\u003e\u003c/p\u003e","id":"23e3f699-dee9-4464-b678-5761f38ee86c"},{"type":"boxed_content","value":{"background_option":"light","custom_background_colour":"","content":"\u003ch3 data-block-key=\"ttp2m\"\u003eExample iperf2 test\u003c/h3\u003e\u003cp data-block-key=\"3s88m\"\u003eThe following shows iperf2 being run from another Jisc server to the iperf endpoint:\u003c/p\u003e\u003cp data-block-key=\"catdl\"\u003e$ iperf –c iperf-slough-10g.perf.ja.net\u003cbr/\u003e------------------------------------------------------------\u003cbr/\u003eClient connecting to iperf-slough-10g.perf.ja.net, TCP port 5001\u003cbr/\u003eTCP window size: 11.1 MByte (default)\u003cbr/\u003e------------------------------------------------------------\u003cbr/\u003e[ 3] local 194.81.18.227 port 47990 connected with 194.81.18.231 port 5001\u003cbr/\u003e[ ID] Interval Transfer Bandwidth\u003cbr/\u003e[ 3] 0.0-10.0 sec 11.5 GBytes 9.90 Gbits/sec\u003c/p\u003e\u003cp data-block-key=\"27anb\"\u003eTo test in the reverse path from the server to the client you can use the --reverse option; this is useful if you wish to test throughput into your site. \u003c/p\u003e"},"id":"15691e2a-598e-4e4c-ab49-985c205860d1"},{"type":"content_block","value":"\u003cp data-block-key=\"44ogf\"\u003e\u003c/p\u003e\u003cp data-block-key=\"bgfh1\"\u003eWhether a single stream test can fill a link depends on the operating system, the link capacity, the server hardware and the server (TCP) tuning. For most Linux cases, it should be possible to drive 10Gbit/s with a single iperf stream. If not, it is also possible to run multi-stream tests which should achieve greater performance, particularly if there is some packet loss on the path. \u003c/p\u003e\u003cp data-block-key=\"c11nt\"\u003e\u003c/p\u003e","id":"238f88e0-e4b0-446f-a7a5-c503f0692eac"},{"type":"boxed_content","value":{"background_option":"dark","custom_background_colour":"","content":"\u003cp data-block-key=\"jrm2j\"\u003e\u003cstrong\u003eTop tip:\u003c/strong\u003e We recommend using perfSONAR if you wish to measure throughput periodically over the long-term or run non-contending throughput tests. \u003c/p\u003e"},"id":"d6d093e9-f4e6-4634-92c5-357e5ba47aa2"},{"type":"content_block","value":"\u003cp data-block-key=\"dl7s4\"\u003eWe support iperf testing at rates over 10Gbit/s and up to 100Gbit/s at our London PoP, but this is currently only available on request to \u003ca href=\"mailto:netperf@jisc.ac.uk\"\u003enetperf@jisc.ac.uk\u003c/a\u003e. In this case, using multi-stream tests will likely be required to fill the higher capacity path. \u003c/p\u003e\u003ch2 id=\"ethr-1tugv\" data-block-key=\"1tugv\"\u003eEthr\u003c/h2\u003e\u003cp data-block-key=\"cnbag\"\u003e\u003ca href=\"https://github.com/microsoft/ethr\"\u003eEthr\u003c/a\u003e is an alternative network performance test tool, written in Go. We provide an endpoint at our Slough PoP running at ethr-slough-10g.perf.ja.net. \u003c/p\u003e\u003cp data-block-key=\"fdgn8\"\u003eDistributions of ethr are available on GitHub, where the README provides instructions for Windows, Linux and macOS. \u003ca href=\"https://snapcraft.io/install/ethr-johanburati/centos\"\u003eFind out specific CentOS instalaltion information\u003c/a\u003e.\u003c/p\u003e\u003cp data-block-key=\"et0u\"\u003e\u003c/p\u003e","id":"923c8f5f-659c-439e-b5d7-6957e7ffd2a6"},{"type":"boxed_content","value":{"background_option":"light","custom_background_colour":"","content":"\u003ch3 data-block-key=\"75c8x\"\u003eExample Ethr test\u003c/h3\u003e\u003cp data-block-key=\"33h13\"\u003eThe syntax to run the test is similar to iperf, and full options can be seen with ethr –h\u003c/p\u003e\u003cp data-block-key=\"f181l\"\u003e$ ethr -c ethr-slough-10g.perf.ja.net\u003cbr/\u003eConnecting to host [2001:630:3c:f803::12], port 9999\u003cbr/\u003e[ 6] local 2001:630:3c:f803::6 port 55644 connected to 2001:630:3c:f803::12 port 9999\u003c/p\u003e\u003cp data-block-key=\"co9go\"\u003e- - - - - - - - - - - - - - - - - - - - - - -\u003cbr/\u003e[ ID] Protocol Interval Bits/s\u003cbr/\u003e[ 6] TCP 000-001 sec 9.55G\u003cbr/\u003e[ 6] TCP 001-002 sec 9.89G\u003cbr/\u003e[ 6] TCP 002-003 sec 9.67G\u003cbr/\u003e[ 6] TCP 003-004 sec 9.31G\u003cbr/\u003e[ 6] TCP 004-005 sec 9.88G\u003cbr/\u003e[ 6] TCP 005-006 sec 9.84G\u003cbr/\u003e[ 6] TCP 006-007 sec 9.78G\u003cbr/\u003e[ 6] TCP 007-008 sec 9.87G\u003cbr/\u003e[ 6] TCP 008-009 sec 9.88G\u003cbr/\u003e[ 6] TCP 009-010 sec 9.72G\u003c/p\u003e\u003cp data-block-key=\"d8h1v\"\u003e\u003c/p\u003e\u003cp data-block-key=\"av5vv\"\u003eEthr done, duration: 10s.\u003c/p\u003e\u003cp data-block-key=\"8eps2\"\u003eThe ethr output looks more like that of iperf3, with per-second reporting by default. \u003c/p\u003e\u003cp data-block-key=\"el1k9\"\u003eNote that as per iperf, our ethr server at Slough may be in use by other users when you test, so you may not see the maximum available capacity at any given time. \u003c/p\u003e"},"id":"209e8084-2edc-44ab-90bb-5bc10c7d1088"},{"type":"content_block","value":"\u003cp data-block-key=\"ajdfm\"\u003e\u003c/p\u003e\u003cp data-block-key=\"162k8\"\u003e\u003c/p\u003e\u003ch2 id=\"perfsonar-86v56\" data-block-key=\"86v56\"\u003eperfSONAR\u003c/h2\u003e\u003cp data-block-key=\"1b2ag\"\u003eAn iperf or Ethr test only tests performance at a specific moment in time, just as a ping or traceroute test only shows you the current round-trip time, loss or path. \u003c/p\u003e\u003cp data-block-key=\"2d3ll\"\u003eIn contrast, perfSONAR provides a means to measure a range of network characteristics over time, to record them, and to use that history of measurements to better diagnose or troubleshoot performance issues. By default, perfSONAR runs latency, loss and path tests continuously and throughput tests every 6 hours. \u003c/p\u003e\u003cp data-block-key=\"6u71j\"\u003e\u003c/p\u003e","id":"22dc70cb-3c3f-4ec9-a832-3a90be16897b"},{"type":"boxed_content","value":{"background_option":"dark","custom_background_colour":"","content":"\u003cp data-block-key=\"j7qbx\"\u003e\u003cstrong\u003eTop tip:\u003c/strong\u003e We recommend sites run at least one perfSONAR server. The software documentation discusses positioning, but this would typically be at your network edge, or alongside the main filestore you run data transfers to/from. \u003c/p\u003e"},"id":"0e312c31-8bc2-4005-ada7-d9f13b9d1d2b"},{"type":"content_block","value":"\u003cp data-block-key=\"73flp\"\u003e\u003c/p\u003e\u003cp data-block-key=\"85o04\"\u003eThe \u003ca href=\"https://www.perfsonar.net/\"\u003eperfSONAR software\u003c/a\u003e is open source and runs on a variety of Linux platforms. A new major version, 5.0, was released in April 2023. \u003ca href=\"https://docs.perfsonar.net/\"\u003eRead documentation about perfSONAR\u003c/a\u003e.\u003c/p\u003e\u003cp data-block-key=\"cavov\"\u003eThe software is usually run on a dedicated physical server, but you can use a VM or container.\u003c/p\u003e\u003cp data-block-key=\"dqmtd\"\u003eView guidance on:\u003c/p\u003e\u003cul\u003e\u003cli data-block-key=\"r39c\"\u003e\u003ca href=\"https://hub.docker.com/r/perfsonar/testpoint/\"\u003eDocker information\u003c/a\u003e\u003c/li\u003e\u003cli data-block-key=\"9keim\"\u003e\u003ca href=\"https://docs.perfsonar.net/install_hardware.html\"\u003eperfSONAR hardware guidance\u003c/a\u003e\u003c/li\u003e\u003c/ul\u003e\u003cp data-block-key=\"b3to6\"\u003eTo minimise interference between tests you should use two separate network interfaces for the server, one for throughput tests, one for latency/loss tests. \u003c/p\u003e\u003cp data-block-key=\"c0299\"\u003eThere are multiple perfSONAR components that can be installed. The simplest is to install the tools and testpoint packages, such that your server can run tests and report them to another server that archives the results into OpenSearch. The ‘core’ package will additionally allow local archiving, while the full toolkit install will give all functionality. \u003ca href=\"https://docs.perfsonar.net/install_options.html\"\u003eRead guidance on perfSONAR installation options\u003c/a\u003e. \u003c/p\u003e\u003cp data-block-key=\"269ds\"\u003eperfSONAR servers running the toolkit will need a certificate. We recommend you use a certificate that is signed by an authority trusted by browsers, such as certificates issued by the Jisc certificate service or Let’s Encrypt, rather than self-signed. \u003c/p\u003e\u003cp data-block-key=\"5aurf\"\u003eOnce installed, you can configure persistent throughput and latency/loss tests to our Jisc perfSONAR servers. You should run throughput tests to the throughput interface, and latency tests to the latency interface. \u003c/p\u003e\u003cp data-block-key=\"af7up\"\u003eSlough DC, running at up to 10Gbit/s: \u003c/p\u003e\u003cul\u003e\u003cli data-block-key=\"5urnb\"\u003eThroughput interface - ps-slough-bw.perf.ja.net\u003c/li\u003e\u003cli data-block-key=\"38qn3\"\u003eLatency interface - ps-slough-lat.perf.ja.net\u003c/li\u003e\u003c/ul\u003e\u003cp data-block-key=\"b0lpr\"\u003eLondon PoP, running at up to 100Gbit/s: \u003c/p\u003e\u003cul\u003e\u003cli data-block-key=\"64rsh\"\u003eThroughput interface - ps-london-bw.perf.ja.net\u003c/li\u003e\u003cli data-block-key=\"3nc73\"\u003eLatency interface - ps-london-lat.perf.ja.net\u003c/li\u003e\u003c/ul\u003e\u003cp data-block-key=\"7mt8m\"\u003eperfSONAR uses a tool called pscheduler to ensure that throughput tests do not overlap or contend with other tests, so you should have the full capacity of the link available for your measurements. \u003c/p\u003e\u003cp data-block-key=\"99o75\"\u003eYou can also run third-party tests with pscheduler, between two remote perfSONAR servers, if they are configured (via the limits file) to be open, for example: \u003c/p\u003e\u003cp data-block-key=\"98dp0\"\u003e$ pscheduler task throughput --source HOST1 --dest HOST2 \u003c/p\u003e\u003cp data-block-key=\"e14nh\"\u003eWhile tests can be configured to run persistently to/from any given perfSONAR server, it is also possible to create a ‘mesh’ of servers for a community where each tests against the other. One example is the UK World Large Hadron Collider Computing Grid (WLCG) community, GridPP, which has a number of \u003ca href=\"https://psmad.opensciencegrid.org/maddash-webui/index.cgi?dashboard=UK%20Mesh%20Config\"\u003emeshes for IPv4 and IPv6 testing\u003c/a\u003e. Another is the \u003ca href=\"https://psmad.opensciencegrid.org/maddash-webui/index.cgi?dashboard=WLCG%20100G%20Mesh\"\u003eWLCG 100G server mesh\u003c/a\u003e. Jisc can assist with mesh configurations if required. Other servers can be found via the perfSONAR lookup service. \u003c/p\u003e\u003ch2 id=\"data-transfer-node-(dtn)-tests-1f2pu\" data-block-key=\"1f2pu\"\u003eData Transfer Node (DTN) tests\u003c/h2\u003e\u003cp data-block-key=\"3uukk\"\u003eJisc hosts data transfer nodes (DTNs) for application-oriented testing. We can install and support any specific data transfer tools on request. \u003c/p\u003e\u003cp data-block-key=\"e02s3\"\u003eCurrently our Slough DC has a Globus endpoint, running at dtn-slough-10g.perf.ja.net, which is connected at 10Gbit/s.\u003c/p\u003e\u003cp data-block-key=\"5ek8b\"\u003eThe basic Globus transfer tools can be run without a Globus licence/subscription. \u003c/p\u003e\u003cp data-block-key=\"a7r1i\"\u003eA variety of files is available for testing Globus with globus-url-copy: 1M.dat, 2M.dat, 10M.dat, 50M.dat, 1G.dat, 10G.dat, 20G.dat, 100G.dat, 1000G.dat \u003c/p\u003e\u003cp data-block-key=\"b9j24\"\u003eYou can copy to /dev/null or to the file system, for example, copying a 10GB file to /dev/null: \u003c/p\u003e\u003cp data-block-key=\"2ln8m\"\u003e$ globus-url-copy -vb ftp://dtn-slough-10g.perf.ja.net:2811/space00/10G.dat /dev/null \u003c/p\u003e\u003cp data-block-key=\"72p5d\"\u003eThere is also a directory with 100 x 1GB files for more sustained testing: \u003c/p\u003e\u003cp data-block-key=\"a1ei1\"\u003e$ globus-url-copy -r -vb ftp://dtn-slough-10g.perf.ja.net:2811/space00/small/ file:///web.archive.org/web/20240227040306/https://tmp/ \u003c/p\u003e\u003cp data-block-key=\"96n6g\"\u003eWe also have a 100G DTN at our London PoP. Please email \u003ca href=\"mailto:netperf@jisc.ac.uk\"\u003enetperf@jisc.ac.uk\u003c/a\u003e if you wish to test against this. \u003c/p\u003e\u003ch2 id=\"ripe-atlas-anchor-eslo\" data-block-key=\"eslo\"\u003eRIPE Atlas anchor\u003c/h2\u003e\u003cp data-block-key=\"aj9f\"\u003eThe \u003ca href=\"https://atlas.ripe.net/\"\u003eRIPE Atlas project\u003c/a\u003e has grown to over 10,000 measurement devices worldwide, and now supports both physical (small form factor USB/Ethernet) and virtual clients. These can be used to run lightweight tests such as latency, loss, HTTP and DNS between clients and anchors. \u003c/p\u003e\u003cp data-block-key=\"839sj\"\u003eJisc runs a (physical) anchor at our Slough DC which has a web interface available at \u003ca href=\"https://atlas.ripe.net/probes/6695/\"\u003eRIPE Atlas\u003c/a\u003e. At the time of writing there are some 6,000 tests being run against the anchor. \u003c/p\u003e\u003ch2 id=\"tools-in-development-b77uc\" data-block-key=\"b77uc\"\u003eTools in development\u003c/h2\u003e\u003cp data-block-key=\"1gbpg\"\u003eWe are currently looking to deploy an HTTP-based ‘speedtest’ service, most likely using the \u003ca href=\"https://librespeed.org/\"\u003eopen source librespeed package\u003c/a\u003e. There are other implementations available which we are also testing. \u003c/p\u003e\u003cp data-block-key=\"bio9q\"\u003eSuch speedtests aren’t necessarily as accurate as the ones described above, but these are the types of tests that will most likely be run by users served by the Janet network, and in their home networks, because they are trivially easy to run from a browser without installing any local software. By providing a familiar tool we can also include pointers at the test pages towards the more advanced tools, and information describing the limitations of ‘speedtest’ servers. \u003c/p\u003e\u003cp data-block-key=\"d2ahh\"\u003eWe are also following the latest developments in the IP Performance Measurement working group at the Internet Engineering Task Force (IETF) on a new ‘responsiveness’ test. The idea of the test is to measure how many responses per second a server can reply with, which is an indication of the potential buffering delays or ‘buffer bloat’ in a network path. \u003c/p\u003e\u003cp data-block-key=\"9q0ud\"\u003e\u003c/p\u003e","id":"b4451a43-b185-4c71-b468-bef4a651fbb8"},{"type":"boxed_content","value":{"background_option":"light","custom_background_colour":"","content":"\u003ch3 data-block-key=\"u3hmp\"\u003eExample new ‘responsiveness’ test\u003c/h3\u003e\u003cp data-block-key=\"5ps5g\"\u003eOur iperf2 server supports the first implementation of this (as of iperf 2.1.9), which you can test with the –bounceback option, for example: \u003c/p\u003e\u003cp data-block-key=\"5ohe\"\u003e$iperf -c iperf-slough-10g.perf.ja.net -i 1 --bounceback\u003c/p\u003e\u003cp data-block-key=\"7et50\"\u003eThe test reports RPS (responses per second), the higher the better. \u003c/p\u003e"},"id":"ddc2175d-b1fa-405c-8ac6-ee208aa10d47"},{"type":"content_block","value":"\u003cp data-block-key=\"cvrsn\"\u003e\u003c/p\u003e\u003ch2 id=\"further-information-9k6uv\" data-block-key=\"9k6uv\"\u003eFurther information\u003c/h2\u003e\u003cp data-block-key=\"e3gfn\"\u003eYou may also find the following links useful: \u003c/p\u003e\u003cul\u003e\u003cli data-block-key=\"7uhc\"\u003e\u003ca href=\"https://www.jisc.ac.uk/guides/supporting-large-scale-data-transfers-on-janet\"\u003eJisc advice and guidance for large scale data transfers over Janet\u003c/a\u003e\u003c/li\u003e\u003cli data-block-key=\"31l8j\"\u003e\u003ca href=\"https://www.jisc.ac.uk/get-involved/research-network-engineering-community-group\"\u003eJisc Research Network Engineering community\u003c/a\u003e\u003c/li\u003e\u003cli data-block-key=\"85upn\"\u003e\u003ca href=\"https://fasterdata.es.net/\"\u003eEnd-to-end performance tuning guidance\u003c/a\u003e\u003c/li\u003e\u003c/ul\u003e\u003ch2 id=\"contact-us-6la5q\" data-block-key=\"6la5q\"\u003eContact us\u003c/h2\u003e\u003cp data-block-key=\"2gr6j\"\u003eFor any queries about the Jisc test facility systems (on their use or their configuration) please contact our network performance team at \u003ca href=\"mailto:netperf@jisc.ac.uk\"\u003enetperf@jisc.ac.uk\u003c/a\u003e or you can email \u003ca href=\"mailto:elp@jisc.ac.uk\"\u003ehelp@jisc.ac.uk\u003c/a\u003e to raise a ticket with our service desk. \u003c/p\u003e\u003cp data-block-key=\"dnd4g\"\u003eIf there are any other network test servers or services you would like us to host then please get in touch with us.\u003c/p\u003e","id":"878113bd-0910-488d-bd88-6d3d13e4cdd7"}],"redirect_url":"","secondary_page_type":"quick_guide","summary":"How members can use Jisc's network performance test servers to diagnose and troubleshoot their network issues.","table_of_contents":"none","topics":[{"id":16,"name":"Infrastructure and systems"}]}},"__N_SSP":true},"page":"/[...path]","query":{"path":["guides","using-the-janet-network-performance-test-facilities"]},"buildId":"62phW-AXuCLFFYt9M070l","isFallback":false,"isExperimentalCompile":false,"gssp":true,"scriptLoader":[]}</script></body></html>