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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-3822] after upgrade to 2.0.0 mongo starts consuming all cpu resources locking the system, complains of memory leak</title>
                <link>https://jira.mongodb.org/browse/SERVER-3822</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;as never before, mongo started consuming full 4 cores of cpu resulting in system locking for minutes&lt;/p&gt;

&lt;p&gt;also complains:&lt;/p&gt;

&lt;p&gt;Tue Sep 13 03:09:50 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn16410&amp;#93;&lt;/span&gt; warning: virtual size (40690MB) - mapped size (34768MB) is large. could indicate a memory leak&lt;br/&gt;
Tue Sep 13 03:09:55 &lt;span class=&quot;error&quot;&gt;&amp;#91;conn16410&amp;#93;&lt;/span&gt; warning: virtual size (39779MB) - mapped size (34768MB) is large. could indicate a memory leak&lt;/p&gt;</description>
                <environment>centos 5.6 x64</environment>
        <key id="22153">SERVER-3822</key>
            <summary>after upgrade to 2.0.0 mongo starts consuming all cpu resources locking the system, complains of memory leak</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="eliot">Eliot Horowitz</assignee>
                                    <reporter username="ootada">ttt</reporter>
                        <labels>
                            <label>cpu2</label>
                    </labels>
                <created>Tue, 13 Sep 2011 00:20:36 +0000</created>
                <updated>Mon, 11 Jul 2016 18:32:31 +0000</updated>
                            <resolved>Fri, 7 Oct 2011 04:18:42 +0000</resolved>
                                    <version>2.0.0</version>
                                    <fixVersion>2.0.1</fixVersion>
                    <fixVersion>2.1.0</fixVersion>
                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="59039" author="eliot" created="Fri, 7 Oct 2011 04:18:42 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/commit/61bb89fb9cfa47f8ceab6cc37f4b7c74fe005d23&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/61bb89fb9cfa47f8ceab6cc37f4b7c74fe005d23&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="58857" author="auto" created="Thu, 6 Oct 2011 18:39:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;erh&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: Revert &quot;Wait 1ms between attempt to grab posix_spinlock &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3822&quot; title=&quot;after upgrade to 2.0.0 mongo starts consuming all cpu resources locking the system, complains of memory leak&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3822&quot;&gt;&lt;del&gt;SERVER-3822&lt;/del&gt;&lt;/a&gt;&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 2ebc3ba2c8c2eb2ad022edbd600545ebdd5f2989.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/61d26a0e8cc53ce383ef69e8311de2decd37b057&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/61d26a0e8cc53ce383ef69e8311de2decd37b057&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="58727" author="auto" created="Wed, 5 Oct 2011 23:42:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: Wait 1ms between attempt to grab posix_spinlock &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3822&quot; title=&quot;after upgrade to 2.0.0 mongo starts consuming all cpu resources locking the system, complains of memory leak&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3822&quot;&gt;&lt;del&gt;SERVER-3822&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2ebc3ba2c8c2eb2ad022edbd600545ebdd5f2989&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2ebc3ba2c8c2eb2ad022edbd600545ebdd5f2989&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="56048" author="redbeard0531" created="Thu, 22 Sep 2011 23:17:30 +0000"  >&lt;p&gt;We&apos;ve seen a few similar cases and are trying to track down the details. If you could do the following and send us the output files it would help us greatly:&lt;/p&gt;


&lt;p&gt;In mongo shell:&lt;br/&gt;
use DBNAME&lt;br/&gt;
db.createCollection(&apos;system.profile&apos;, &lt;/p&gt;
{capped:true, size:100*1024*1024}
&lt;p&gt;)&lt;br/&gt;
db.setProfilingLevel(1)&lt;/p&gt;

&lt;p&gt;Wait 10 minutes&lt;/p&gt;

&lt;p&gt;At bash shell:&lt;br/&gt;
mongoexport -c &apos;system.indexes&apos; -d DBNAME&lt;br/&gt;
mongodump -c &apos;system.profile&apos; -d DBNAME&lt;/p&gt;</comment>
                            <comment id="53662" author="ootada" created="Tue, 13 Sep 2011 10:36:24 +0000"  >&lt;p&gt;unfortunately, i have forgotten to save that info :/, so won&apos;t be able to&lt;br/&gt;
provide that info until i get opportunity to arrange a test, sorry.&lt;/p&gt;

</comment>
                            <comment id="53610" author="eliot" created="Tue, 13 Sep 2011 04:25:13 +0000"  >&lt;p&gt;Can you send db.serverStatus() and mongostat output?&lt;/p&gt;</comment>
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