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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-44898] Lower thread count and iterations of compact.js FSM workload and blacklist from certain suites</title>
                <link>https://jira.mongodb.org/browse/SERVER-44898</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &quot;compact&quot; commands &lt;a href=&quot;https://github.com/mongodb/mongo/blob/6e87fdd5d291e3d363a8ee5a22ddc5cbd87f150e/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.cpp#L1537&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;takes the checkpoint mutex&lt;/a&gt;, which blocks on checkpoints. This was added by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43828&quot; title=&quot;WT compact calls must take the CheckpointLock so that it is mutually exclusive with validate cmd opening cursors&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43828&quot;&gt;&lt;del&gt;SERVER-43828&lt;/del&gt;&lt;/a&gt;, and causes slowness in certain concurrency workloads where the cost of checkpointing is high.&lt;/p&gt;

&lt;p&gt;We should do two things:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Lower the thread count and number of iterations of the compact.js and related workloads&lt;/li&gt;
	&lt;li&gt;Blacklist the workload from the especially slow &quot;concurrency_simultaneous_replication_wiredtiger_eviction_debug&quot; and &quot;concurrency_simultaneous_replication_wiredtiger_cursor_sweeps&quot; suites. From what I understand, cursor sweeps block checkpoints, and eviction debug mode makes them slower, so it would be expected for the compact command to take a long time in scenarios.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1030531">SERVER-44898</key>
            <summary>Lower thread count and iterations of compact.js FSM workload and blacklist from certain suites</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="daniel.ernst@mongodb.com">Daniel Ernst</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Mon, 2 Dec 2019 15:42:22 +0000</created>
                <updated>Sun, 29 Oct 2023 22:14:31 +0000</updated>
                            <resolved>Wed, 8 Jan 2020 17:08:20 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2712231" author="xgen-internal-githook" created="Wed, 8 Jan 2020 16:55:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Daniel Ernst&apos;, &apos;email&apos;: &apos;daniel.ernst@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44898&quot; title=&quot;Lower thread count and iterations of compact.js FSM workload and blacklist from certain suites&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44898&quot;&gt;&lt;del&gt;SERVER-44898&lt;/del&gt;&lt;/a&gt; Lower thread count of compact FSM workloads and blacklist from sensitives suites&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4b3046cb76b84af6d5bfccde728c52045a9d2aab&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4b3046cb76b84af6d5bfccde728c52045a9d2aab&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2586826" author="dianna.hohensee" created="Thu, 5 Dec 2019 20:52:06 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44969&quot; title=&quot;Remove the mutex around WT compact calls&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44969&quot;&gt;&lt;del&gt;SERVER-44969&lt;/del&gt;&lt;/a&gt; was filed to reduce the contention of concurrent commands.&lt;/p&gt;</comment>
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