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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-21481] Optimize BSONObjBuilder::numStr</title>
                <link>https://jira.mongodb.org/browse/SERVER-21481</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the getMore command we need to construct a large BSON array of cursor response documents. If the documents are small, the indices of the elements can hit well over 100, which is the limit of the fast path for BSONObjBuilder::numStr. Under vTune we can see that we are spending almost 25% of our cycles in numStr for an in-memory collection scan workload.&lt;/p&gt;
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                <environment></environment>
        <key id="239595">SERVER-21481</key>
            <summary>Optimize BSONObjBuilder::numStr</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="9">Done</resolution>
                                        <assignee username="adam.midvidy">Adam Midvidy</assignee>
                                    <reporter username="adam.midvidy">Adam Midvidy</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Nov 2015 19:01:29 +0000</created>
                <updated>Wed, 25 Nov 2015 00:27:00 +0000</updated>
                            <resolved>Wed, 18 Nov 2015 20:10:56 +0000</resolved>
                                                    <fixVersion>3.2.0-rc4</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1092136" author="xgen-internal-githook" created="Wed, 18 Nov 2015 20:10:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;amidvidy&apos;, u&apos;name&apos;: u&apos;Adam Midvidy&apos;, u&apos;email&apos;: u&apos;amidvidy@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-21481&quot; title=&quot;Optimize BSONObjBuilder::numStr&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-21481&quot;&gt;&lt;del&gt;SERVER-21481&lt;/del&gt;&lt;/a&gt; optimize generating indices in BSONArrayBuilder&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f59b2b7634b1c4c84e3f8f096a4e895986bf4d30&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f59b2b7634b1c4c84e3f8f096a4e895986bf4d30&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1089543" author="adam.midvidy" created="Mon, 16 Nov 2015 19:03:52 +0000"  >&lt;p&gt;I&apos;ve attached the script I used to generate the load. Run insert.js once, then run find.js repeatedly as needed.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="98454" name="find.js" size="241" author="adam.midvidy" created="Mon, 16 Nov 2015 19:03:52 +0000"/>
                            <attachment id="98453" name="insert.js" size="730" author="adam.midvidy" created="Mon, 16 Nov 2015 19:03:52 +0000"/>
                            <attachment id="98452" name="numstre.png" size="49119" author="adam.midvidy" created="Mon, 16 Nov 2015 19:02:45 +0000"/>
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