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    <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-39644] Mongo DB crashing due to cannot allocate memory </title>
                <link>https://jira.mongodb.org/browse/SERVER-39644</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;We are getting multiple errors while more than 1500 connections in mongo db . Its 4 core CPU and 32 GB Ram . While running more connections getting below errors . Please help us on this . Mongo DB version 3.6.9&lt;/p&gt;

&lt;p&gt;2019-02-14T16:58:42.647+0600 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;conn1911&amp;#93;&lt;/span&gt; out of memory.&lt;br/&gt;
2019-02-14T17:03:36.669+0600 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ** WARNING: /proc/sys/vm/overcommit_memory is 2&lt;br/&gt;
2019-02-14T19:08:12.535+0600 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;conn1634&amp;#93;&lt;/span&gt; out of memory.&lt;br/&gt;
2019-02-14T19:24:26.481+0600 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;conn419&amp;#93;&lt;/span&gt; out of memory.&lt;br/&gt;
2019-02-15T14:56:30.890+0600 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;conn27879&amp;#93;&lt;/span&gt; out of memory.&lt;br/&gt;
2019-02-16T00:25:42.818+0600 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;thread28378&amp;#93;&lt;/span&gt; WiredTiger error (12) &lt;span class=&quot;error&quot;&gt;&amp;#91;1550255140:820816&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;1657:0x7fc305e0a700&amp;#93;&lt;/span&gt;, log-server: __directory_list_worker, 48: /mongodb/dtpreprod//journal: directory-list: opendir: Cannot allocate memory&lt;br/&gt;
2019-02-16T00:25:48.684+0600 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;thread28378&amp;#93;&lt;/span&gt; WiredTiger error (12) &lt;span class=&quot;error&quot;&gt;&amp;#91;1550255147:597488&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;1657:0x7fc305e0a700&amp;#93;&lt;/span&gt;, log-server: __log_archive_once, 409: log archive server error: Cannot allocate memory&lt;br/&gt;
2019-02-16T00:25:56.369+0600 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;thread28378&amp;#93;&lt;/span&gt; WiredTiger error (12) &lt;span class=&quot;error&quot;&gt;&amp;#91;1550255155:364572&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;1657:0x7fc305e0a700&amp;#93;&lt;/span&gt;, log-server: __log_server, 1015: log server error: Cannot allocate memory&lt;br/&gt;
2019-02-16T00:29:18.759+0600 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;conn26990&amp;#93;&lt;/span&gt; out of memory.&lt;/p&gt;</description>
                <environment></environment>
        <key id="699077">SERVER-39644</key>
            <summary>Mongo DB crashing due to cannot allocate memory </summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="4">Incomplete</resolution>
                                        <assignee username="daniel.hatcher@mongodb.com">Danny Hatcher</assignee>
                                    <reporter username="selvacks@gmail.com">Selvakumar K</reporter>
                        <labels>
                    </labels>
                <created>Sat, 16 Feb 2019 07:02:51 +0000</created>
                <updated>Mon, 6 May 2019 19:39:23 +0000</updated>
                            <resolved>Mon, 6 May 2019 19:39:23 +0000</resolved>
                                                                    <component>Diagnostics</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="2224744" author="daniel.hatcher" created="Thu, 25 Apr 2019 15:33:31 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=selvacks%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;selvacks@gmail.com&quot;&gt;selvacks@gmail.com&lt;/a&gt; are you still experiencing this issue?&lt;/p&gt;</comment>
                            <comment id="2155921" author="daniel.hatcher" created="Tue, 19 Feb 2019 18:17:40 +0000"  >&lt;p&gt;Hello,&lt;/p&gt;

&lt;p&gt;As your errors mention, it appears that there is no more memory available on the server for MongoDB to optimally function. If you upload your &lt;tt&gt;mongod&lt;/tt&gt; logs and &quot;diagnostic.data&quot; folder (located under the &lt;tt&gt;$dbpath&lt;/tt&gt;) to our &lt;a href=&quot;https://10gen-httpsupload.s3.amazonaws.com/upload_forms/a8341c00-d197-4b0d-aefc-ea3ed5725c75.html&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Secure Upload Portal&lt;/a&gt; we can take a look to see if anything stands out. Please note that only MongoDB engineers will be able to see the files uploaded via the portal and all files will automatically delete after a period of time.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;/p&gt;

&lt;p&gt;Danny&lt;/p&gt;</comment>
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