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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-13743] Mongod killed by linux OOM under long running test load</title>
                <link>https://jira.mongodb.org/browse/SERVER-13743</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is probably due to a leak. Mongod runs out of memory and get kicked out from the OS. Memory (as reported by top(1)) looks growing linearly with time.&lt;br/&gt;
Scenario:&lt;br/&gt;
&lt;a href=&quot;https://github.com/dcci/mongo-stress/blob/master/createdb.sh&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/dcci/mongo-stress/blob/master/createdb.sh&lt;/a&gt;&lt;br/&gt;
It takes about 2 hours in my machine to reproduce.&lt;br/&gt;
You&apos;ll need the mongo C driver and libbsd (the code relies on arc4random()).&lt;/p&gt;</description>
                <environment></environment>
        <key id="133398">SERVER-13743</key>
            <summary>Mongod killed by linux OOM under long running test load</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="3">Duplicate</resolution>
                                        <assignee username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="davide.italiano">Davide Italiano</reporter>
                        <labels>
                            <label>28qa</label>
                            <label>concurrency</label>
                    </labels>
                <created>Fri, 25 Apr 2014 18:49:15 +0000</created>
                <updated>Wed, 10 Dec 2014 23:05:41 +0000</updated>
                            <resolved>Tue, 13 May 2014 17:26:56 +0000</resolved>
                                    <version>2.7.0</version>
                                                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="582321" author="kaloian.manassiev" created="Tue, 13 May 2014 17:26:56 +0000"  >&lt;p&gt;I am resolving this as duplicate of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13794&quot; title=&quot;Unused snapshot history consuming significant heap space&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13794&quot;&gt;&lt;del&gt;SERVER-13794&lt;/del&gt;&lt;/a&gt;. The snapshots code has been changed to only run if HTTP monitoring is enabled.&lt;/p&gt;</comment>
                            <comment id="568488" author="davide.italiano" created="Wed, 30 Apr 2014 19:33:09 +0000"  >&lt;p&gt;I was able to isolate the commit that triggered the problem using git bisect.&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1249034444dc146eb6177fbe4845e593b807f84d#diff-c44e3f2aa4926579a722790f6f3e1690R940&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1249034444dc146eb6177fbe4845e593b807f84d#diff-c44e3f2aa4926579a722790f6f3e1690R940&lt;/a&gt;&lt;br/&gt;
results in a memory usage growth until mongod crashes.&lt;br/&gt;
Reverting to &lt;/p&gt;
&lt;p/&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Author: Siyuan Zhou &amp;lt;siyuan.zhou@mongodb.com&amp;gt;&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;Date:   Mon Apr 14 14:52:07 2014 -0400&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    SERVER-13579 Wait for deletion after migration in feature2.js&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;

&lt;p&gt;makes the problem disappearing. The attached screenshot shows the memory usage.&lt;/p&gt;</comment>
                    </comments>
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                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="134162">SERVER-13794</issuekey>
        </issuelink>
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                <attachments>
                            <attachment id="42472" name="MongoManyDBsStressTest.java" size="2146" author="kaloian.manassiev@mongodb.com" created="Thu, 1 May 2014 16:11:51 +0000"/>
                            <attachment id="42470" name="memory_leak_before.txt" size="27375" author="kaloian.manassiev@mongodb.com" created="Thu, 1 May 2014 16:07:21 +0000"/>
                            <attachment id="42471" name="memory_leak_latest.txt" size="22616" author="kaloian.manassiev@mongodb.com" created="Thu, 1 May 2014 16:07:21 +0000"/>
                            <attachment id="42436" name="server13743.png" size="65084" author="davide.italiano" created="Wed, 30 Apr 2014 19:33:08 +0000"/>
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