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        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-45854] Hold WorkingSetMembers at a distance for sorting</title>
                <link>https://jira.mongodb.org/browse/SERVER-45854</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If we buffer and sort &lt;tt&gt;WorkingSetMembers&lt;/tt&gt; directly, then we pay for moving these objects during the std::swap()s performed by the &lt;tt&gt;Sorter&lt;/tt&gt;&apos;s underlying call to std::stable_sort(). If we instead sort pointers to &lt;tt&gt;WorkingSetMembers&lt;/tt&gt;, then these swaps are cheaper. This has been shown to improve the throughput of our blocking sort benchmark (Aggregation.Sort).&lt;/p&gt;</description>
                <environment></environment>
        <key id="1120925">SERVER-45854</key>
            <summary>Hold WorkingSetMembers at a distance for sorting</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="13201">Fixed</resolution>
                                        <assignee username="david.storch@mongodb.com">David Storch</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Wed, 29 Jan 2020 23:07:43 +0000</created>
                <updated>Sun, 29 Oct 2023 22:12:45 +0000</updated>
                            <resolved>Wed, 5 Feb 2020 01:03:20 +0000</resolved>
                                                    <fixVersion>4.3.4</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2784048" author="xgen-internal-githook" created="Wed, 5 Feb 2020 01:00:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;dstorch&apos;, &apos;name&apos;: &apos;David Storch&apos;, &apos;email&apos;: &apos;david.storch@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45854&quot; title=&quot;Hold WorkingSetMembers at a distance for sorting&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45854&quot;&gt;&lt;del&gt;SERVER-45854&lt;/del&gt;&lt;/a&gt; Hold WorkingSetMembers at a distance for sorting.&lt;/p&gt;

&lt;p&gt;This change improves the performance of blocking sort&lt;br/&gt;
operations executed in the PlanStage layer using the&lt;br/&gt;
SortStage.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8dbf4dec2a10a447bacd84dc336cac741d1bdc5a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8dbf4dec2a10a447bacd84dc336cac741d1bdc5a&lt;/a&gt;&lt;/p&gt;</comment>
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