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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-55482] Improve BucketCatalog::MinMax algorithm</title>
                <link>https://jira.mongodb.org/browse/SERVER-55482</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we can spend a great deal of time maintaining the MinMax in timeseries bucket operations. This algorithm can likely be improved so the cost shrinks.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1657815">SERVER-55482</key>
            <summary>Improve BucketCatalog::MinMax algorithm</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="13201">Fixed</resolution>
                                        <assignee username="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="dan.larkin-york@mongodb.com">Dan Larkin-York</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Mar 2021 14:57:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:55:49 +0000</updated>
                            <resolved>Wed, 7 Apr 2021 12:48:32 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3705102" author="xgen-internal-githook" created="Wed, 7 Apr 2021 12:47:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55482&quot; title=&quot;Improve BucketCatalog::MinMax algorithm&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55482&quot;&gt;&lt;del&gt;SERVER-55482&lt;/del&gt;&lt;/a&gt; Optimize timeseries minmax calculation algorithm&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Only traverse inserted object once, calculate both min and max at the same time&lt;/li&gt;
	&lt;li&gt;Allow inlining of comparator when possible&lt;/li&gt;
	&lt;li&gt;Reuse buffer to store values if buffer size is sufficient&lt;/li&gt;
	&lt;li&gt;Don&apos;t store field name in value as it is already stored in map owning MinMax object.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Overall this should cut CPU usage in about half.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/659a367887558c4ed71bead6e1da9b5a5fe3d84b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/659a367887558c4ed71bead6e1da9b5a5fe3d84b&lt;/a&gt;&lt;/p&gt;</comment>
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