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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
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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-58414] Evaluate the performance of the new workload on master</title>
                <link>https://jira.mongodb.org/browse/SERVER-58414</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The goal of this task is to evaluate the performance of the new workload introduced on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58413&quot; title=&quot;Create/Find a workload that does CRUD ops while moving chunks around&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58413&quot;&gt;&lt;del&gt;SERVER-58413&lt;/del&gt;&lt;/a&gt; on master.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1814808">SERVER-58414</key>
            <summary>Evaluate the performance of the new workload on master</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="antonio.fuschetto@mongodb.com">Antonio Fuschetto</assignee>
                                    <reporter username="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</reporter>
                        <labels>
                    </labels>
                <created>Mon, 12 Jul 2021 07:03:02 +0000</created>
                <updated>Thu, 29 Jul 2021 14:13:44 +0000</updated>
                            <resolved>Thu, 29 Jul 2021 13:47:57 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3964655" author="JIRAUSER1259062" created="Tue, 27 Jul 2021 07:13:14 +0000"  >&lt;p&gt;The script, testing the performance of the business cases described&#160;on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58413&quot; title=&quot;Create/Find a workload that does CRUD ops while moving chunks around&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58413&quot;&gt;&lt;del&gt;SERVER-58413&lt;/del&gt;&lt;/a&gt;,&#160;has been run on both the master version and after &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58416&quot; title=&quot;POC: Implementing a 2-phase commit protocol on the moveChunk operation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58416&quot;&gt;&lt;del&gt;SERVER-58416&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;The complete test results are available at &lt;a href=&quot;https://docs.google.com/spreadsheets/d/1xtthULBdq7jLvGy2PA7KRmb527jw81MQD_XGMM4N9Wk/edit?usp=sharing&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Workloads: Move chunk with load&lt;/a&gt;, and the &lt;em&gt;Comparison&lt;/em&gt; tab highlights the differences in terms of performance between the two samples.&lt;/p&gt;

&lt;p&gt;The performance metrics measured by the script are:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Read ops throughput before moveChunk (op/sec)&lt;/li&gt;
	&lt;li&gt;Read ops throughput during moveChunk (op/sec)&lt;/li&gt;
	&lt;li&gt;Write ops throughput before moveChunk (op/sec)&lt;/li&gt;
	&lt;li&gt;Write ops throughput during moveChunk (op/sec)&lt;/li&gt;
	&lt;li&gt;MoveChunk ops throughput (doc/sec)&lt;/li&gt;
	&lt;li&gt;Commit critical section duration (msec)&lt;/li&gt;
	&lt;li&gt;Total critical section duration (msec)&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;In a nutshell, this test highlights that &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58416&quot; title=&quot;POC: Implementing a 2-phase commit protocol on the moveChunk operation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58416&quot;&gt;&lt;del&gt;SERVER-58416&lt;/del&gt;&lt;/a&gt; increased the execution time of the &lt;em&gt;commit critical section&lt;/em&gt;&#160;of the &lt;tt&gt;moveChunk&lt;/tt&gt; command of about 50%. This value appears to be in line with our forecasts.&lt;/p&gt;</comment>
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