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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-42731] Mongod process memory usage is too high</title>
                <link>https://jira.mongodb.org/browse/SERVER-42731</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&#19968;&#22871;&#22797;&#21046;&#38598;&#29615;&#22659;&#65292;&#25968;&#25454;&#37327;&#21482;&#26377;&#20960;&#30334;k&#65292;wt&#30340;&#37197;&#32622;&#26159;&#22312;9G&#24038;&#21491;&#65288;&#34394;&#25311;&#26426;&#30340;&#20869;&#23384;&#26159;16G&#65289;&#65292;&#36830;&#25509;&#25968;&#24179;&#26102;&#20063;&#21482;&#26377;20~30&#20010;&#36830;&#25509;&#65292;&#26368;&#36817;&#21457;&#29616;&#19978;&#38754;&#30340;&#20027;&#33410;&#28857;&#30340;mongod&#30340;&#20869;&#23384;&#21344;&#29992;&#29575;&#27604;&#36739;&#39640;&#65292;&#24403;&#21069;&#19968;&#30452;&#21344;&#29992;&#22312;12G&#24038;&#21491;&#65292;&#36827;&#31243;&#30340;&#29289;&#29702;&#20869;&#23384;&#39640;&#27700;&#20301;&#21435;&#21040;13G&#12290;&lt;/p&gt;

&lt;p&gt;Google Translate:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;A set of replication set environment, the amount of data is only a few hundred k, the configuration of wt is around 9G (the memory of the virtual machine is 16G), and the number of connections is only 20~30 connections. Recently, the memory of the mongod of the master node above is found. The occupancy rate is relatively high, and it currently occupies about 12G. The physical memory of the process has a high water level to go to 13G.&lt;/p&gt;&lt;/blockquote&gt;</description>
                <environment></environment>
        <key id="889173">SERVER-42731</key>
            <summary>Mongod process memory usage is too high</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="backlog-server-triage">Backlog - Triage Team</assignee>
                                    <reporter username="huangzhuxing@pytech.cn">huang zhuxing</reporter>
                        <labels>
                    </labels>
                <created>Fri, 9 Aug 2019 08:19:26 +0000</created>
                <updated>Tue, 6 Dec 2022 02:51:10 +0000</updated>
                            <resolved>Fri, 9 Aug 2019 16:05:45 +0000</resolved>
                                    <version>3.6.9</version>
                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2364871" author="daniel.hatcher" created="Fri, 9 Aug 2019 16:05:29 +0000"  >&lt;p&gt;Please note that the WiredTiger cache configuration simply bounds one aspect of MongoDB&apos;s memory usage. The &lt;tt&gt;mongod&lt;/tt&gt; process will eventually grow to use all available memory on a server unless constrained at the OS-level via cgroups or similar.&lt;/p&gt;

&lt;p&gt;The SERVER project is for bugs and feature suggestions for the MongoDB server. If you need assistance troubleshooting memory optimizations, I encourage you to ask our community by posting on the &lt;a href=&quot;https://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-user group&lt;/a&gt; or on &lt;a href=&quot;https://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;.&lt;/p&gt;</comment>
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