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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-48436] mongod crashes - oom</title>
                <link>https://jira.mongodb.org/browse/SERVER-48436</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I seem to get oom crashes on my VPS.&lt;/p&gt;

&lt;p&gt;you will find attached the mongo log file, as well as the diagnostics file data.&lt;br/&gt;
(please note that I am not sure if this is an actual bug)&lt;/p&gt;

&lt;p&gt;Additional notes: &lt;br/&gt;
the crash happened when the application server was idle (no users connected),&lt;br/&gt;
when stress testing the application server (100 concurrent users), mongoDB performed as expected,&lt;br/&gt;
when the same crash happened in the past, I noticed that the performance counters PerfOS (DLL Name: %SystemRoot%\System32\perfos.dll) had been disabled and I had to enable them manually (my application server uses them as well, that&apos;s how I noticed).&lt;/p&gt;</description>
                <environment>Windows (Windows Server 2016 Datacenter)&lt;br/&gt;
VPS: Azure B1S (1vCPU, 1GB RAM), VRAM (pagefile) : 4GB.&lt;br/&gt;
</environment>
        <key id="1363418">SERVER-48436</key>
            <summary>mongod crashes - oom</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="13204">Community Answered</resolution>
                                        <assignee username="dmitry.agranat@mongodb.com">Dmitry Agranat</assignee>
                                    <reporter username="constantine.mous@gmail.com">Constantine Moustakakis</reporter>
                        <labels>
                            <label>Windows</label>
                    </labels>
                <created>Wed, 27 May 2020 08:54:03 +0000</created>
                <updated>Fri, 27 Oct 2023 15:56:33 +0000</updated>
                            <resolved>Tue, 30 Jun 2020 12:25:18 +0000</resolved>
                                    <version>4.2.6</version>
                    <version>4.2.7</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="3229811" author="dmitry.agranat" created="Tue, 30 Jun 2020 12:25:07 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=constantine.mous%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;constantine.mous@gmail.com&quot;&gt;constantine.mous@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We haven&#8217;t heard back from you for some time, so I&#8217;m going to mark this ticket as resolved. If this is still an issue for you, please provide additional information and we will reopen the ticket.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
                            <comment id="3189435" author="JIRAUSER1252666" created="Thu, 4 Jun 2020 13:07:23 +0000"  >&lt;p&gt;Thank you for your reply and sorry for taking up your time.&lt;br/&gt;
we will investigate further on our side.&lt;/p&gt;</comment>
                            <comment id="3189422" author="dmitry.agranat" created="Thu, 4 Jun 2020 12:51:58 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=constantine.mous%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;constantine.mous@gmail.com&quot;&gt;constantine.mous@gmail.com&lt;/a&gt;, thank you for the report.&lt;/p&gt;

&lt;p&gt;This issue does not seem to be related to MongoDB.&lt;/p&gt;

&lt;p&gt; &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;img src=&quot;https://jira.mongodb.org/secure/attachment/264305/264305_oom.png&quot; width=&quot;100%&quot; style=&quot;border: 0px solid black&quot; /&gt;&lt;/span&gt; &lt;/p&gt;

&lt;p&gt;MongoDB memory utilization is 29 MB with less than 1 MB in the WT cache on this 1 GB server. At &lt;b&gt;A&lt;/b&gt;, something happens on this server and OS decides to commit a large amount of system memory. Eventually, you ran out of PageFile&apos;s maximum defined ~4 GB.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="262629" name="metrics.2020-05-26T08-05-14Z-00000" size="4121572" author="constantine.mous@gmail.com" created="Wed, 27 May 2020 08:47:00 +0000"/>
                            <attachment id="262628" name="metrics.2020-05-27T05-44-51Z-00000" size="121977" author="constantine.mous@gmail.com" created="Wed, 27 May 2020 08:47:06 +0000"/>
                            <attachment id="262630" name="mongod.log" size="203498" author="constantine.mous@gmail.com" created="Wed, 27 May 2020 08:46:26 +0000"/>
                            <attachment id="264305" name="oom.png" size="165250" author="dmitry.agranat@mongodb.com" created="Thu, 4 Jun 2020 12:48:23 +0000"/>
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