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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-82280] The 6.x version performance is lower than 4.x</title>
                <link>https://jira.mongodb.org/browse/SERVER-82280</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment>OS:CentOS Linux release 7.5.1804 (Core)</environment>
        <key id="2476091">SERVER-82280</key>
            <summary>The 6.x version performance is lower than 4.x</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="noopur.gupta@mongodb.com">Noopur Gupta</assignee>
                                    <reporter username="327488733@qq.com">zhenxing yu</reporter>
                        <labels>
                    </labels>
                <created>Tue, 17 Oct 2023 07:59:34 +0000</created>
                <updated>Tue, 31 Oct 2023 14:53:31 +0000</updated>
                            <resolved>Tue, 31 Oct 2023 14:53:31 +0000</resolved>
                                    <version>6.0.10</version>
                                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5842337" author="JIRAUSER1275035" created="Tue, 31 Oct 2023 14:53:17 +0000"  >&lt;p&gt;I am closing this ticket, feel free to open a ticket if you suspect a bug from MongoD Server.&#160;&lt;/p&gt;</comment>
                            <comment id="5817291" author="JIRAUSER1275035" created="Fri, 27 Oct 2023 21:05:27 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;MongoDB v4.2 has &lt;a href=&quot;https://www.mongodb.com/support-policy/legacy&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;reached end of life in April 2023&lt;/a&gt; and is no longer supported. It is highly recommended to upgrade to v4.2+.&lt;br/&gt;
That being said, there has been a large number of changes from v4.2 to v6.0, so change in performance is expected. (see&lt;a href=&quot;https://www.mongodb.com/docs/manual/administration/production-notes&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&#160;Production notes&lt;/a&gt; )&lt;/p&gt;

&lt;p&gt;I understand your concern, however, SERVER project is for &quot;bug reports, new feature requests, and improvement suggestions&#8221; from the Core Server and community. &#160;&lt;br/&gt;
For this issue we&apos;d like to encourage you to start by asking our community for help by posting on the &lt;a href=&quot;https://www.mongodb.com/community/forums&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;MongoDB Developer Community Forums&lt;/a&gt; for any tuning advice. &lt;br/&gt;
If the discussion there leads you to suspect a bug in the MongoDB server, then we&apos;d want to investigate it as a possible bug here in the SERVER project.&lt;/p&gt;

&lt;p&gt;Thanks&lt;/p&gt;</comment>
                            <comment id="5798478" author="327488733@qq.com" created="Mon, 23 Oct 2023 10:58:19 +0000"  >&lt;p&gt;Is there anyone in the community who can support me?&lt;/p&gt;</comment>
                            <comment id="5783658" author="327488733@qq.com" created="Tue, 17 Oct 2023 08:08:19 +0000"  >&lt;p&gt;I have a quasi-production environment originally 4.2.22, but I am considering upgrading to 6.0.6. During the performance pressure test, I found that the performance difference of the pressure test results is too large. The plug-in performance of 6.0.6 is only about half of that of 4.2, because my business scenario involves a large amount of upsert logic. So version 6.0.6 doesn&apos;t meet my performance requirements at all, so I&apos;m curious why the performance of the new version is worse than the old version, and I checked the results of other people&apos;s tests on the network&#65288;&lt;a href=&quot;https://serpapi.com/blog/the-downfall-of-mongodb-performance-2/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://serpapi.com/blog/the-downfall-of-mongodb-performance-2/&lt;/a&gt;), and my results are basically similar. Attached is the test data of my local virtual machine for reference. Please kindly help to check whether the test conclusion is the expectation of MongoDB&apos;s current design.&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="483349" name="mongoDB_4.2.22_vs_mongoDB_6.0.6_performance_test.txt" size="10889" author="327488733@qq.com" created="Tue, 17 Oct 2023 08:04:03 +0000"/>
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