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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-73870] Investigate false sharing in PriorityTicketHolder</title>
                <link>https://jira.mongodb.org/browse/SERVER-73870</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&#160;It would be nice to evaluate if false sharing could impact performance on the PriorityTicketHolder.&#160;&lt;/p&gt;

&lt;p&gt;A starting place could be running ticketholder_bm with cache profiling.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2260284">SERVER-73870</key>
            <summary>Investigate false sharing in PriorityTicketHolder</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="haley.connelly@mongodb.com">Haley Connelly</reporter>
                        <labels>
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                <created>Fri, 10 Feb 2023 11:28:16 +0000</created>
                <updated>Tue, 14 Feb 2023 16:32:28 +0000</updated>
                            <resolved>Tue, 14 Feb 2023 16:32:28 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5186009" author="haley.connelly" created="Fri, 10 Feb 2023 11:31:50 +0000"  >&lt;p&gt;It&apos;s possible there is no false sharing with the PriorityTicketHolder. However, it could be worthwhile to regain some performance of the switch from &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ce925dfbbc9459f65b1ad6f91a2d85c02ab69ca4/src/mongo/util/concurrency/semaphore_ticketholder.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;SempahoreTicketHolder&lt;/a&gt; to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ce925dfbbc9459f65b1ad6f91a2d85c02ab69ca4/src/mongo/util/concurrency/priority_ticketholder.h&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;PriorityTicketHolder&lt;/a&gt;.&#160;&lt;/p&gt;</comment>
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