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<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>LKML: "Amanulla G": Re: /proc on 2.4.21 & 2.6 kernels....</title><link href="/css/message.css" rel="stylesheet" type="text/css" /><link href="/css/wrap.css" rel="alternate stylesheet" type="text/css" title="wrap" /><link href="/css/nowrap.css" rel="stylesheet" type="text/css" title="nowrap" /><link href="/favicon.ico" rel="shortcut icon" /><script src="/js/simple-calendar.js" type="text/javascript"></script><script src="/js/styleswitcher.js" type="text/javascript"></script><link rel="alternate" type="application/rss+xml" title="lkml.org : last 100 messages" href="/rss.php" /><link rel="alternate" type="application/rss+xml" title="lkml.org : last messages by "Amanulla G"" href="/groupie.php?aid=28640" /><script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(["setDoNotTrack", true]); _paq.push(["disableCookies"]); _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function() { var u="//m.lkml.org/"; _paq.push(['setTrackerUrl', u+'matomo.php']); _paq.push(['setSiteId', '1']); var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); })(); </script></head><body onload="es.jasper.simpleCalendar.init();" itemscope="itemscope" itemtype="http://schema.org/BlogPosting"><table border="0" cellpadding="0" cellspacing="0"><tr><td width="180" align="center"><a href="/"><img style="border:0;width:135px;height:32px" src="/images/toprowlk.gif" alt="lkml.org" /></a></td><td width="32">聽</td><td class="nb"><div><a class="nb" href="/lkml"> [lkml]</a> 聽 <a class="nb" href="/lkml/2005"> [2005]</a> 聽 <a class="nb" href="/lkml/2005/4"> [Apr]</a> 聽 <a class="nb" href="/lkml/2005/4/5"> [5]</a> 聽 <a class="nb" href="/lkml/last100"> [last100]</a> 聽 <a href="/rss.php"><img src="/images/rss-or.gif" border="0" alt="RSS Feed" /></a></div><div>Views: <a href="#" class="nowrap" onclick="setActiveStyleSheet('wrap');return false;">[wrap]</a><a href="#" class="wrap" onclick="setActiveStyleSheet('nowrap');return false;">[no wrap]</a> 聽 <a class="nb" href="/lkml/mheaders/2005/4/5/178" onclick="this.href='/lkml/headers'+'/2005/4/5/178';">[headers]</a>聽 <a href="/lkml/bounce/2005/4/5/178">[forward]</a>聽 </div></td><td width="32">聽</td></tr><tr><td valign="top"><div class="es-jasper-simpleCalendar" baseurl="/lkml/"></div><div class="threadlist">Messages in this thread</div><ul class="threadlist"><li class="root"><a href="/lkml/2005/4/5/178">First message in thread</a></li><li class="origin"><a href="/lkml/2005/4/5/181">"Amanulla G"</a><ul><li><a href="/lkml/2005/4/5/181">Arjan van de Ven</a><ul><li><a href="/lkml/2005/4/5/206">"Amanulla G"</a><ul><li><a href="/lkml/2005/4/5/209">Arjan van de Ven</a><ul><li><a href="/lkml/2005/5/3/128">"Amanulla G"</a></li></ul></li></ul></li></ul></li></ul></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">From</td><td class="rp" itemprop="author">"Amanulla G" <></td></tr><tr><td class="lp">Subject</td><td class="rp" itemprop="name">Re: /proc on 2.4.21 & 2.6 kernels....</td></tr><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Tue, 5 Apr 2005 20:41:36 +0530</td></tr></table></td><td></td></tr></table><pre itemprop="articleBody"><br />Hi, <br />I would like to know the information on /proc under 2.4.21 based kernels.<br /><br />On 2.4.21 based kernels, /proc has got two types of entries.<br />/proc/pid & /proc/.tid<br /><br />The statistics under /proc/pid reflect just resource utilization of pid<br />alone. They are not summarization of resource utilization of process and the<br />threads it creates. I would like to know is there any way that we can make<br />sure that statistics under /proc/pid reflect the resource utilization of<br />threads it creates too? <br /><br />Here are the additional details.<br /><br /><br />1) One line summary of the problem:<br />>> On 2.4.21 based kernels, /proc/pid doesn't include the consolidated<br />resource utilization of the threads it has created.<br /><br />2) Full description of the problem/report:<br /><br />>> Assume we have a process with pid = 1234<br /> And this process creates two threads with thread IDs 1235 & 1236.<br /> We have three entries<br /> a) /proc/1234<br /> b) /proc/.1235<br /> c) /proc/.1236<br /> The statistics under /proc/1234 doesn't reflect resource utilization<br />of threads.<br /><br />3) Keywords (i.e., modules, networking, kernel):<br />>> /proc<br /><br />4) Kernel version (from /proc/version):<br />>> 2.4.21<br /><br />5) Output of Oops.. message (if applicable) with symbolic information <br /> resolved (see Documentation/oops-tracing.txt)<br />>> N/A<br /><br />6) A small shell script or example program which triggers the<br /> problem (if possible)<br />>> Can be easily seen with multi-threaded processes<br /><br /><br />We would like to know <br />1) Is this a known problem? <br />2) Whether this problem has been fixed? If yes, in which version of the<br />kernel this issue has been fixed? <br />3) In 2.6 based kernels we have different way of getting thread data. <br /> /proc/<pid>/tasks/tid<br /> Does /proc/<pid>/stat has got the summarized statistics of resource<br />utilization of threads it has created ? or it just reflects the resource<br />utilization of <pid> only? <br /><br />Thanks in advance!<br /><br />With Best Regards,<br />Amanulla<br /><br /><br /><br />-<br />To unsubscribe from this list: send the line "unsubscribe linux-kernel" in<br />the body of a message to majordomo@vger.kernel.org<br />More majordomo info at <a href="http://vger.kernel.org/majordomo-info.html">http://vger.kernel.org/majordomo-info.html</a><br />Please read the FAQ at <a href="http://www.tux.org/lkml/">http://www.tux.org/lkml/</a><br /><br /></pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2005-04-06 13:31 聽聽 [from the cache]<br />漏2003-2020 <a href="http://blog.jasper.es/"><span itemprop="editor">Jasper Spaans</span></a>|hosted at <a href="https://www.digitalocean.com/?refcode=9a8e99d24cf9">Digital Ocean</a> and my Meterkast|<a href="http://blog.jasper.es/categories.html#lkml-ref">Read the blog</a></td><td>聽</td></tr></table><script language="javascript" src="/js/styleswitcher.js" type="text/javascript"></script></body></html>