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    <title>MongoDB Jira</title>
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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-3295] Too many open cursors leaking memory</title>
                <link>https://jira.mongodb.org/browse/SERVER-3295</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Over time I can see a steady growth of Virtual - Mapped on the server in a way that is uncorrelated with the number of connections. However, it looks like too many cursors are open. How do we fix that?&lt;/p&gt;


&lt;p&gt;        &quot;cursors&quot;:&lt;/p&gt;
{
            &quot;totalOpen&quot;:677263,
            &quot;clientCursors_size&quot;:677263,
            &quot;timedOut&quot;:20
         }
&lt;p&gt;,&lt;/p&gt;</description>
                <environment></environment>
        <key id="18472">SERVER-3295</key>
            <summary>Too many open cursors leaking memory</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="dwight@mongodb.com">Dwight Merriman</assignee>
                                    <reporter username="will@objectlabs.com">Will Shulman</reporter>
                        <labels>
                    </labels>
                <created>Sun, 19 Jun 2011 21:11:29 +0000</created>
                <updated>Mon, 29 Aug 2011 15:56:37 +0000</updated>
                            <resolved>Mon, 20 Jun 2011 03:07:10 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="38419" author="auto" created="Tue, 21 Jun 2011 00:17:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;dwight&apos;, u&apos;name&apos;: u&apos;dwight&apos;, u&apos;email&apos;: u&apos;dwight@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3295&quot; title=&quot;Too many open cursors leaking memory&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3295&quot;&gt;&lt;del&gt;SERVER-3295&lt;/del&gt;&lt;/a&gt; report more details on cursors in serverstatus to facilitate troubleshooting&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e33be1a519b8a6345eb4cefacafa8952b0a3d632&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e33be1a519b8a6345eb4cefacafa8952b0a3d632&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="38383" author="dwight_10gen" created="Mon, 20 Jun 2011 21:13:29 +0000"  >&lt;p&gt;be sure no one is using QueryOption_NoCursorTimeout option.  perhaps this can be checked with mongosniff.&lt;/p&gt;</comment>
                            <comment id="38382" author="dwight_10gen" created="Mon, 20 Jun 2011 21:12:22 +0000"  >&lt;p&gt;timedOut is virtually zero, which surprises me and makes me wonder what is up.&lt;/p&gt;</comment>
                            <comment id="38271" author="eliot" created="Mon, 20 Jun 2011 03:07:10 +0000"  >&lt;p&gt;cursors get closed when: &lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;10 minutes of inactivity&lt;/li&gt;
	&lt;li&gt;client consume all data&lt;/li&gt;
	&lt;li&gt;client closes once a user is done with it&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Its impossible to give a generic answer to this, so the mailing list might be a better place to diagnose.&lt;/p&gt;</comment>
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