Performance Optimization | مساعدة Blackboard

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href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Migration_Planning" hreflang="ar">تخطيط الترحيل</a> </li> <li id="nid-14002" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Accessibility" hreflang="ar">إمكانية الوصول</a> </li> <li id="nid-14005" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Architecture" hreflang="ar">Architecture</a> </li> <li id="nid-14008" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Authentication" hreflang="ar">Authentication</a> </li> <li id="nid-14026" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Backup_and_Recovery" hreflang="ar">Backup and 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<nav id="book-block-menu-11788" class="book-block-menu" role="navigation" data-product="SmartView" aria-label="Book outline for Blackboard SmartView"> <ul class="menu my-book-menu non-active-book"> <li id="nid-11788" class="menu-item menu-item--expanded"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/SmartView" hreflang="ar">SmartView</a> <ul class="menu"> <li id="nid-11790" class="menu-item"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/SmartView/Authentication_Logging_In" hreflang="ar">Logging In</a> </li> <li id="nid-11791" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/SmartView/Advisor_Desktop_Interface" hreflang="ar">Advisor Desktop</a> </li> <li id="nid-11797" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/SmartView/Service_Desk_Interface" hreflang="ar">Service Desk</a> </li> </ul> </li> </ul> </nav> <nav 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</ul> </nav> <nav id="book-block-menu-21691" class="book-block-menu" role="navigation" data-product="Web Community Manager" aria-label="Book outline for Blackboard Web Community Manager"> <ul class="menu my-book-menu non-active-book"> <li id="nid-21691" class="menu-item menu-item--expanded"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Web_Community_Manager" hreflang="ar">Web Community Manager</a> <ul class="menu"> <li id="nid-21696" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Web_Community_Manager/Parent_Community_Member" hreflang="ar">Parent/Community Member</a> </li> <li id="nid-21701" class="menu-item menu-item--collapsed lazy folder"> <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Web_Community_Manager/Student" hreflang="ar">Student</a> </li> <li id="nid-22326" class="menu-item menu-item--collapsed lazy folder"> <a 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data-block-plugin-id="block_content:4089d30d-1c4e-4ceb-bf0e-4199adc0a900"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field__item"><div class="page-header__tools"><a class="page-header__home" href="/web/20200426031739/https://help.blackboard.com/" title="الصفحة الرئيسية"><span aria-hidden="true" class="icon-home"/>الصفحة الرئيسية</a> <a class="page-header__print" title="طباعة"><span aria-hidden="true" class="icon-printer"/>طباعة</a></div></div> </div> <div class="block block--block-blackboard-page-title " id="block-blackboard-page-title" data-block-plugin-id="page_title_block"> <h1><span>Performance Optimization</span> </h1> </div> <div class="block block--block-liftslot-fullspanbanner " id="block-liftslot-fullspanbanner" data-block-plugin-id="block_content:582f9bde-be9a-4fe6-b87f-1314126a7021"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field__item"><div data-lift-slot="fb2baad0-4af7-11e7-b2aa-9d057867a0b0"></div></div> </div> <div class="block block--block-liftslot-studentlandingbanner " id="block-liftslot-studentlandingbanner" data-block-plugin-id="block_content:36968852-eb69-4598-8fc0-afc21978c52f"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field__item"><div data-lift-slot="077642d0-89bb-11e7-8902-7de7c872c496"></div></div> </div> <div class="block block--block-liftslot-instructorlandingbanner " id="block-liftslot-instructorlandingbanner" data-block-plugin-id="block_content:896a174e-6094-4226-8825-122d884ecc5f"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field__item"><div data-lift-slot="535c7f70-89bb-11e7-9aa3-ef6c45e0fd72"></div></div> </div> <div class="block block--block-views-block-view-english-only-content-block-1 views-element-container" id="block-views-block-view-english-only-content-block-1" data-block-plugin-id="views_block:view_english_only_content-block_1"> <div><div class="view view-view-english-only-content view-id-view_english_only_content view-display-id-block_1 js-view-dom-id-00e58d7345f0ccb8e488258d291b635fb294565371eba6304d861bb6039c9fcb"> <div class="view-content"> <div class="views-row"> <div class="views-field views-field-nothing"><span class="field-content"><p class="note">لا تتاح هذه الصفحة إلا باللغة الإنجليزية فقط.</p></span></div> </div> </div> </div> </div> </div> <div class="block block--block-views-block-view-english-spanish-only-content-block-1 views-element-container" id="block-views-block-view-english-spanish-only-content-block-1" data-block-plugin-id="views_block:view_english_spanish_only_content-block_1"> <div><div class="view view-view-english-spanish-only-content view-id-view_english_spanish_only_content view-display-id-block_1 js-view-dom-id-13d02060246dd68f04f9cae91af5811ab7ea14e203270a0404a3bd25e8f55bc4"> </div> </div> </div> <div class="block block--block-covid19 " id="block-covid19" data-block-plugin-id="block_content:8fc27601-7e34-4c40-9fb8-408a55c149c7"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field__item"><div class="block--warn-alert-triangle"> <div class="block block--block-blackboard-content "> <p>A special note from Product Management on COVID-19: The team has been taking several pre-emptive infrastructure measures to help prepare for significantly increased traffic as a growing number of schools move to fully online courses. We will continue to monitor closely and take any additional steps required to provide a seamless service.</p> </div> </div></div> </div> </div> </div> </div> </header> <main role="main"> <a id="main-content" tabindex="-1"></a> <div class="page-content"> <ul class="visually-hidden accessible-navigation__content"> </ul> <div class="region region-content"> <div data-drupal-messages-fallback class="hidden"></div> <div class="block block--block-views-block-view-applies-to-original-course-view-admin-block-1 views-element-container" id="block-views-block-view-applies-to-original-course-view-admin-block-1" data-block-plugin-id="views_block:view_applies_to_original_course_view_admin-block_1"> <div><div class="view view-view-applies-to-original-course-view-admin view-id-view_applies_to_original_course_view_admin view-display-id-block_1 js-view-dom-id-d9139382a95b7267a2c12f77f3d7686225cf9821cf072e9d58fe4d7295a6950d"> </div> </div> </div> <div class="block 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views-element-container" id="block-views-block-view-applies-to-institution-controls-rubrics-1" data-block-plugin-id="views_block:view_applies_to_institution_controls_gradebook_and_rubrics-block_1"> <div><div class="view view-view-applies-to-institution-controls-gradebook-and-rubrics view-id-view_applies_to_institution_controls_gradebook_and_rubrics view-display-id-block_1 js-view-dom-id-806523b3b59872e16a0b27f1aee9ea289c55cdb0efcf2cf39b87629bf44f71f9"> </div> </div> </div> <div class="block block--block-views-block-view-applies-to-institution-controls-rubrics-2 views-element-container" id="block-views-block-view-applies-to-institution-controls-rubrics-2" data-block-plugin-id="views_block:view_applies_to_institution_controls_rubrics-block_1"> <div><div class="view view-view-applies-to-institution-controls-rubrics view-id-view_applies_to_institution_controls_rubrics view-display-id-block_1 js-view-dom-id-c32ef11064a92b9c7eb8084acec2168d194ea1420b2fbb64482f47f382d3b3cf"> </div> </div> </div> <div class="block block--block-views-block-view-applies-to-institution-controls-tests-block-1 views-element-container" id="block-views-block-view-applies-to-institution-controls-tests-block-1" data-block-plugin-id="views_block:view_applies_to_institution_controls_tests-block_1"> <div><div class="view view-view-applies-to-institution-controls-tests view-id-view_applies_to_institution_controls_tests view-display-id-block_1 js-view-dom-id-39825e01f06da54947b62091d19c81ad6578ea82ef78c585d1d11bb01a956c20"> </div> </div> </div> <div class="block block--block-views-block-view-applies-to-self-hosting-block-1 views-element-container" id="block-views-block-view-applies-to-self-hosting-block-1" data-block-plugin-id="views_block:view_applies_to_self_hosting-block_1"> <div><div class="view view-view-applies-to-self-hosting view-id-view_applies_to_self_hosting view-display-id-block_1 js-view-dom-id-7edab89acd2a63aa2300d56b1aeaf23c45379c4e6eea1e50e309aa997e77beab"> <div class="view-content"> <div class="views-row"> <div class="views-field views-field-nothing"><span class="field-content"><p class="note">إذا كنت عميل "استضافة مُدارة"، فهذا الموضوع لا ينطبق عليك.</p></span></div> </div> </div> </div> </div> </div> <div class="block block--block-blackboard-content " id="block-blackboard-content" data-block-plugin-id="system_main_block"> <article role="article" lang="en" dir="ltr" about="/Learn/Administrator/Hosting/Performance_Optimization"> <div> <div class="field field--name-field-content-page-paragraphs field--type-entity-reference-revisions field--label-hidden field__items"> <div class="paragraph paragraph--type--basic-content-paragraph paragraph--view-mode--default"> <div class="field field--name-field-content field--type-text-long field--label-hidden field__item"><p>The Blackboard Learn architecture and the selected deployment option help users experience improved performance, overall system performance can be further improved by optimizing various system components.</p> <p></p><div class="view view--child-nodes view-child-nodes view-id-child_nodes view-display-id-default js-view-dom-id-34d0ec3466a47fff300275b7be3dc95a280d3360d3e6810054b63d19b84a9729"> <div class="view-empty"> <div class="view view--child-nodes view-child-nodes view-id-child_nodes view-display-id-fallback js-view-dom-id-2083179b1f9b8f607c2e1eeac45944457630c5280a3a679b0a0d6a9f1e7a404a"> <div class="view-content"> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/bb-config.properties_File" hreflang="en">bb-config.properties</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Hardware_Sizing" hreflang="en">Hardware Sizing</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Load_Balancing" hreflang="en">Load Balancing</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_Apache" hreflang="en">Optimization: Apache</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_Caching" hreflang="en">Optimization: Application Caching</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_IIS" hreflang="en">Optimization: IIS</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_NFS" hreflang="en">Optimization: NFS</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_Oracle" hreflang="en">Optimization: Oracle</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_SIS" hreflang="en">Optimization: SIS</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_SQL" hreflang="en">Optimization: SQL</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_Tomcat" hreflang="en">Optimization: Tomcat</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Performance_Optimization_Resources" hreflang="en">Performance Optimization Resources</a></div></div> </div> <div class="views-row"> <div class="views-field views-field-field-nav-label"><div class="field-content"><a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Virtualizing_the_Blackboard_Reference_Architecture" hreflang="en">Virtualize the Blackboard Reference Architecture</a></div></div> </div> </div> </div> </div> </div> <h2>About Learn performance optimization</h2> <p>Blackboard Learn supports a flexible architecture which is configurable to meet installation requirements. This architecture consists of two primary tiers - content delivery via a web server (HTTPd or Apache™ Tomcat), and a relational database. Files are served from a file server (recommended) or in the case of single or two server installations the application server. Understanding installation goals and IT requirements help in guiding your optimization and hardware selections.</p> <div data-embed-button="media_browser" data-entity-embed-display="view_mode:media.embedded" data-entity-type="media" data-entity-uuid="c11f666d-2658-4d6a-89a6-59cd369b588f" data-langcode="en" class="embedded-entity"><div> <div lang="en-us" style="max-width: 100%; width: 600px;" class="internal field field--name-image field--type-image field--label-hidden field__item" xml:lang="en-us" xml:lang="en-us"> <img src="/web/20200426031739im_/https://help.blackboard.com/sites/default/files/bb_assets_embed/14000/Load_Balancing.png" width="850" height="1054" alt="" typeof="foaf:Image"/></div> </div> </div> <h3 lang="en-us" xml:lang="en-us" xml:lang="en-us">Blackboard Learn architecture</h3> <p class="note">For current information about supported configurations, see the <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Release_Notes/Supported_Technologies">Supported Technologies for Self-Hosted Systems</a>.</p> <p>Blackboard Learn's flexible application architecture enables clients to scale and optimize the performance and responsiveness of their environment:</p> <ul><li><span class="emphasize">Distributed Processing Load</span>: The Blackboard Learn processing model, which is based on Web 2.0 and client-rich technologies, distributes the load between the client-side browser, the application, and the database. This reduces the perceived response time for users because they can interact with the page as it loads elements asynchronously.</li> <li><span class="emphasize">Server-Side Caching</span>: The Blackboard Learn server-side caching architecture uses Ehcache in a number of areas to reduce the number of time-consuming trips to the database to fulfill requests for data that does not change during the course of a user's session. Ehcache is a pure Java™, in-process cache that is designed for large, high concurrency systems. Each of these caching structures is configured within the <span class="code">bb-config.properties</span> file and can be configured on a case-by-case basis.</li> <li><span class="emphasize">Multiple Deployment Options</span>: The Blackboard Learn architecture supports maximum scalability and high service levels by providing a variety of deployment options, including load-balancing, application tier clustering, and virtualization. Although Blackboard Learn can be deployed in a traditional horizontal manner, it also can be clustered at the application tier to load balance from the web server to multiple JVMs, or virtualized to run multiple instances of Blackboard Learn and the web server on virtualized servers. To make the best use of available hardware resources, Blackboard Learn can be deployed using any or a combination of two or three of these options.</li> </ul><h3>Performance optimization</h3> <p>All application environments are different. Although the out-of-the-box configuration of any application can satisfy basic processing needs, extended uptime with fewer maintenance windows, increased numbers of users, and usage patterns can result in performance issues. To configure the system appropriately, first evaluate the specific environment and application usage.</p> <p>Although scaling the Blackboard Learn deployment supports an increased number of users without adversely affecting performance, system performance can be further improved to achieve higher service levels, reduce risk, and improve user perceptions of performance, which will in turn increase user satisfaction and reduce user abandonment. To do so, optimize the performance of the components in the application tier as well as the performance of the database.</p> <p>In general, Release 9.1 is more responsive and scalable than both Release 9.0 Service Pack 3 and Release 8 Service Pack 6 across all supported platform configurations. Blackboard completed more than 2000 hours of performance tests on Release 9.1, and this number will continue to increase as Blackboard produces Service Packs against the Release 9.1 code line.</p> <h4>Optimizing application tier performance</h4> <p>To achieve the best performance in the application tier, optimize each of these components.</p> <p class="note">The web server and the application container must reside on the same server.</p> <ul><li><span class="emphasize">Web server</span>: The primary purpose of the web server in the Blackboard Learn architecture is to provide features not available in the application container, such as Shibboleth. In Blackboard Learn, the web server used depends on the operating system environment. In a Microsoft® Windows® environment, the web server is Microsoft Internet Information Server (IIS). In a UNIX® environment, the web server is Apache™ HTTP Server. To learn more, see <a href="/web/20200426031739/https://help.blackboard.com/ar-sa/Learn/Administrator/Hosting/Performance_Optimization/Optimization_IIS/Configuring_Microsoft_IIS" title="Configure Microsoft IIS">Configuring Microsoft IIS</a>.</li> <li><span class="emphasize">Application container</span>: Apache™ Tomcat is an open-source Java application container that is packaged with Blackboard Learn for all operating systems. To effectively optimize Tomcat performance, it is necessary to understand the role of the Java Virtual Machine (JVM™) and container components, such as execution threads and JDBC connections.</li> <li><span class="emphasize">Java Virtual Machine (JVM™)</span>: The Java 2 Platform, Standard Edition (J2SE™) JVM is the most critical component of the Java platform because it manages memory allocation and controls how the container handles incoming requests. If the system has been deployed using application tier clustering, the application tier might include multiple servers or JVMs that need to be optimized.</li> </ul><h4>Optimizing database tier performance</h4> <p>In Blackboard Learn, the database used depends on the operating system environment. In a Windows environment, the database must be Microsoft SQL Server®. In a UNIX environment, the database must be Oracle®.</p> <h4>Optimizing addressable memory</h4> <p>Blackboard Learn Release 9.1 allows for the use of more addressable memory via 64-bit architecture. Blackboard encourages clients to take advantage of larger Java Virtual Machines (JVMs) that range from 2GB to 16GB in size. 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