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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-50969] Investigate performance disparities with new grammar-based parser</title>
                <link>https://jira.mongodb.org/browse/SERVER-50969</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="1476990">SERVER-50969</key>
            <summary>Investigate performance disparities with new grammar-based parser</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="nicholas.zolnierz@mongodb.com">Nicholas Zolnierz</assignee>
                                    <reporter username="nicholas.zolnierz@mongodb.com">Nicholas Zolnierz</reporter>
                        <labels>
                    </labels>
                <created>Wed, 16 Sep 2020 13:55:30 +0000</created>
                <updated>Sun, 29 Oct 2023 22:03:08 +0000</updated>
                            <resolved>Wed, 23 Sep 2020 00:50:45 +0000</resolved>
                                                    <fixVersion>4.8.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3406554" author="xgen-internal-githook" created="Wed, 23 Sep 2020 00:47:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Nick Zolnierz&apos;, &apos;email&apos;: &apos;nicholas.zolnierz@mongodb.com&apos;, &apos;username&apos;: &apos;nzolnierzmdb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-50969&quot; title=&quot;Investigate performance disparities with new grammar-based parser&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-50969&quot;&gt;&lt;del&gt;SERVER-50969&lt;/del&gt;&lt;/a&gt; Add benchmark for CST/grammar-based parser&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b048d3a5cc6c1860b9be369baf1ac5e2f0988941&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b048d3a5cc6c1860b9be369baf1ac5e2f0988941&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3399776" author="nicholas.zolnierz" created="Thu, 17 Sep 2020 19:00:18 +0000"  >&lt;p&gt;Awesome, thanks for the tip &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=robert.guo&quot; class=&quot;user-hover&quot; rel=&quot;robert.guo&quot;&gt;robert.guo&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="3399673" author="robert.guo" created="Thu, 17 Sep 2020 18:15:21 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=nicholas.zolnierz&quot; class=&quot;user-hover&quot; rel=&quot;nicholas.zolnierz&quot;&gt;nicholas.zolnierz&lt;/a&gt; Evergreen can&apos;t catch regressions automatically but we have integrated gbench with Evergreen&apos;s perf plugin to allow catching regressions through the trend charts. E.g. &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_rhel_62_benchmarks_benchmarks_sharding_2c446f3f587f406c23cdfca87f227ee5cd466fa8_20_09_17_04_49_08#%23threads=all&amp;amp;selected.BM_IncrementalRefreshOfPessimalBalancedDistribution%252F2%252F50000=1&amp;amp;selected.BM_IncrementalRefreshOfPessimalBalancedDistribution%252F2%252F250000=1&amp;amp;selected.BM_IncrementalRefreshOfPessimalBalancedDistribution%252F2%252F500000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FOptimal%252F2%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FOptimal%252F10%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FOptimal%252F100%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FOptimal%252F1000%252F50000=1&amp;amp;selected.BM_FullBuildOfChunkManager%252FOptimal%252F2%252F2=1&amp;amp;selected.BM_FindIntersectingChunk%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_FindIntersectingChunk%252FOptimal%252F2%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FOptimal%252F10%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FOptimal%252F100%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FOptimal%252F1000%252F50000=1&amp;amp;selected.BM_FindIntersectingChunk%252FOptimal%252F2%252F2=1&amp;amp;selected.BM_GetShardIdsForRange%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_GetShardIdsForRange%252FOptimal%252F2%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FOptimal%252F10%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FOptimal%252F100%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FOptimal%252F1000%252F50000=1&amp;amp;selected.BM_GetShardIdsForRange%252FOptimal%252F2%252F2=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FOptimal%252F2%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FOptimal%252F10%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FOptimal%252F100%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FOptimal%252F1000%252F50000=1&amp;amp;selected.BM_GetShardIdsForRangeMinKeyToMaxKey%252FOptimal%252F2%252F2=1&amp;amp;selected.BM_KeyBelongsToMe%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_KeyBelongsToMe%252FOptimal%252F2%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FOptimal%252F10%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FOptimal%252F100%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FOptimal%252F1000%252F50000=1&amp;amp;selected.BM_KeyBelongsToMe%252FOptimal%252F2%252F2=1&amp;amp;selected.BM_RangeOverlapsChunk%252FPessimal%252F2%252F50000=1&amp;amp;selected.BM_RangeOverlapsChunk%252FPessimal%252F10%252F50000=1&amp;amp;selected.BM_RangeOverlapsChunk%252FPessimal%252F100%252F50000=1&amp;amp;selected.BM_RangeOverlapsChunk%252FPessimal%252F1000%252F50000=1&amp;amp;selected.BM_RangeOverlapsChunk%252FPessimal%252F2%252F2=1&amp;amp;selected.BM_RangeOverlapsChunk%252FOptimal%252F2%252F50000=1&amp;amp;selected.&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Here&apos;s the sharding benchmarks suite&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The gbench suite is defined like any other resmoke suite but with the &lt;tt&gt;test_kind&lt;/tt&gt; set to &lt;tt&gt;benchmark_test&lt;/tt&gt;. See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/buildscripts/resmokeconfig/suites/benchmarks_sharding.yml&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;benchmarks_sharding.yml as an example here&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Hope that helps!&lt;/p&gt;</comment>
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