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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-57856] Performance degradation in docker when limit the resource with --cpus</title>
                <link>https://jira.mongodb.org/browse/SERVER-57856</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I deployed a mongodb with docker for testing, with following cmd&lt;/p&gt;

&lt;p&gt;```&lt;/p&gt;

&lt;p&gt;docker run --rm --name mongodb -p 27017:27017 -v /mnt/mongo/data:/data/db -m 2g --cpus=2 -d mongo:latest&lt;/p&gt;

&lt;p&gt;```&lt;/p&gt;

&lt;p&gt;The host VM is a Ubuntu18.04, with 4 cores and 16G mem.&lt;/p&gt;

&lt;p&gt;The testing works as following:&lt;/p&gt;

&lt;p&gt;Insert 2,000,000 documents into mongodb with python.&lt;/p&gt;

&lt;p&gt;the document is like following:&lt;/p&gt;

&lt;p&gt;```&lt;/p&gt;
{
event_time: &apos;2021-06-02T11:40:26&apos;,
src_addr: &apos;192.168.75.190&apos;,
src_port: 58612,
dst_addr: &apos;161.125.178.34&apos;,
dst_port: 786,
url: &apos;http://www.orozco.net/&apos;,
mime_type: &apos;text/css&apos;,
md5: &apos;6aa1af2ba586a0dfae3f880e155f9fdb&apos;,
file_name: &apos;apply.jpeg&apos;,
server_token: &apos;Varnish&apos;,
user_agent: &apos;Mozilla/5.0 (compatible; MSIE 8.0; Windows 98; Trident/4.1)&apos;
}
&lt;p&gt;```&lt;/p&gt;

&lt;p&gt;Index were set on: event_time, src_addr, src_port, dst_addr, dst_port and file_name.&lt;/p&gt;

&lt;p&gt;The performance is extremely slow: about 200/s.&lt;/p&gt;

&lt;p&gt;I adjust the host VM to 2 cores and 16G mem, and redo the testing, the interesting thing happened. The inserting performance became about 15000/s.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;I think the key point is the core number of the host VM and the index.&lt;/p&gt;

&lt;p&gt;When I remove the index, the performance is about 25000/s even the limited core number is less than the host VM&apos;s core.&lt;/p&gt;

&lt;p&gt;When the index is setup, the performance became very slow when the limited core number is not equal to the host VM&apos;s.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Thanks!&lt;/p&gt;

&lt;p&gt;Fred&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1790757">SERVER-57856</key>
            <summary>Performance degradation in docker when limit the resource with --cpus</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="-1">Unassigned</assignee>
                                    <reporter username="chw_throx@163.com">fred chen</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Jun 2021 02:55:28 +0000</created>
                <updated>Mon, 21 Jun 2021 16:41:46 +0000</updated>
                            <resolved>Mon, 21 Jun 2021 16:41:46 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3889154" author="eric.sedor" created="Mon, 21 Jun 2021 16:41:46 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=chw_throx%40163.com&quot; class=&quot;user-hover&quot; rel=&quot;chw_throx@163.com&quot;&gt;chw_throx@163.com&lt;/a&gt;; we&apos;ll close this ticket and continue in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57855&quot; title=&quot;Performance degradation in docker when limit the resource with --cpus&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57855&quot;&gt;&lt;del&gt;SERVER-57855&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="3887717" author="JIRAUSER1260776" created="Mon, 21 Jun 2021 02:58:58 +0000"  >&lt;p&gt;Sorry, Something is wrong than I created a duplicated case with 57855, pls help to ingore for I don&apos;t know how to close.&lt;/p&gt;</comment>
                    </comments>
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