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<channel>
    <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-36602] 3.4.14 VS 4.0.0</title>
                <link>https://jira.mongodb.org/browse/SERVER-36602</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I have tested&#160; with the ycsb&#160;tool&#160; in MongoDB&#160;3.4.14 and MongoDB&#160; 4.0.0&lt;br/&gt;
of course, 2 MongoDB&#160;instances&#160;are the same architecture ( H/W, OS,&#160; mongo conf)&lt;br/&gt;
and MongoDB&#160; is a replica&#160;set&#160;(3 members per instance)&lt;/p&gt;

&lt;p&gt;I expected MongoDB 4.0.0 better performance then 4.0.0, but as below results, 3.4.14 is better then 4.0.0&lt;/p&gt;

&lt;p&gt;can you teach me how to test correctly?&lt;br/&gt;
otherwise is this result is right?&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;


&lt;p&gt;1)&#160; used tool (&lt;a href=&quot;https://github.com/brianfrankcooper/YCSB/releases/download/0.14.0/ycsb-0.14.0.tar.gz&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/brianfrankcooper/YCSB/releases/download/0.14.0/ycsb-0.14.0.tar.gz)&lt;/a&gt;&lt;/p&gt;



&lt;p&gt;2) test script&lt;/p&gt;

&lt;p&gt;&amp;lt;load&amp;gt;&lt;/p&gt;

&lt;p&gt;ycsb load mongodb -s -P ycsb-0.14.0/workloads/workloada \&lt;/p&gt;

&lt;p&gt;-p recordcount=1000000 -threads 4 \&lt;/p&gt;

&lt;p&gt;-p mongodb.url=&quot;&lt;span class=&quot;error&quot;&gt;&amp;#91;mongodb://sysbench:mongobench@localhost:20011/mongoycsb&amp;#93;&lt;/span&gt;&quot; \&lt;/p&gt;

&lt;p&gt;-p mongodb.auth=&quot;true&quot; &amp;gt; 1.log&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&amp;lt;run&amp;gt;&lt;/p&gt;

&lt;p&gt;ycsb run mongodb -s -P ycsb-0.14.0/workloads/workloada \&lt;/p&gt;

&lt;p&gt;-p operationcount=200000-threads 8 \&lt;/p&gt;

&lt;p&gt;-p mongodb.url=&quot;&lt;span class=&quot;error&quot;&gt;&amp;#91;mongodb://sysbench:mongobench@localhost:20011/mongoycsb&amp;#93;&lt;/span&gt;&quot; \&lt;/p&gt;

&lt;p&gt;-p mongodb.auth=&quot;true&quot; &amp;gt; 2.log&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&amp;lt;3.4.14-load&amp;gt;&lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, RunTime(ms), 301149&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, Throughput(ops/sec), 3320.615376441562&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_Copy&amp;#93;&lt;/span&gt;, Count, 1615&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_Copy&amp;#93;&lt;/span&gt;, Time(ms), 2290&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_Copy&amp;#93;&lt;/span&gt;, Time(%), 0.7604209212051177&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_MarkSweepCompact&amp;#93;&lt;/span&gt;, Count, 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(ms), 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(%), 0.0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCs&amp;#93;&lt;/span&gt;, Count, 1615&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME&amp;#93;&lt;/span&gt;, Time(ms), 2290&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%&amp;#93;&lt;/span&gt;, Time(%), 0.7604209212051177&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, Operations, 4&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, AverageLatency(us), 2934.5&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MinLatency(us), 1&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MaxLatency(us), 11727&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 11727&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 11727&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, Operations, 1000000&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, AverageLatency(us), 1194.921027&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, MinLatency(us), 150&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, MaxLatency(us), 410623&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 2613&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 12215&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, Return=OK, 1000000&lt;/p&gt;


&lt;p&gt;&amp;lt;4.0.0-load&amp;gt;&lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, RunTime(ms), 497302&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, Throughput(ops/sec), 2010.8505495654551&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_Copy&amp;#93;&lt;/span&gt;, Count, 2230&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_Copy&amp;#93;&lt;/span&gt;, Time(ms), 4052&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_Copy&amp;#93;&lt;/span&gt;, Time(%), 0.8147966426839225&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_MarkSweepCompact&amp;#93;&lt;/span&gt;, Count, 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(ms), 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(%), 0.0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCs&amp;#93;&lt;/span&gt;, Count, 2230&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME&amp;#93;&lt;/span&gt;, Time(ms), 4052&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%&amp;#93;&lt;/span&gt;, Time(%), 0.8147966426839225&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, Operations, 4&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, AverageLatency(us), 3123.25&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MinLatency(us), 1&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MaxLatency(us), 12463&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 12463&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 12463&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, Operations, 1000000&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, AverageLatency(us), 1979.043032&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, MinLatency(us), 205&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, MaxLatency(us), 604671&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 4093&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 6423&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;INSERT&amp;#93;&lt;/span&gt;, Return=OK, 1000000&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&amp;lt;3.4.14-run&amp;gt;&lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, RunTime(ms), 71617&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, Throughput(ops/sec), 2792.63303405616&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_Copy&amp;#93;&lt;/span&gt;, Count, 464&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_Copy&amp;#93;&lt;/span&gt;, Time(ms), 775&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_Copy&amp;#93;&lt;/span&gt;, Time(%), 1.0821453006967618&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_MarkSweepCompact&amp;#93;&lt;/span&gt;, Count, 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(ms), 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(%), 0.0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCs&amp;#93;&lt;/span&gt;, Count, 464&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME&amp;#93;&lt;/span&gt;, Time(ms), 775&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%&amp;#93;&lt;/span&gt;, Time(%), 1.0821453006967618&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, Operations, 100042&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, AverageLatency(us), 2586.8670658323504&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, MinLatency(us), 152&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, MaxLatency(us), 947711&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 11543&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 19679&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, Return=OK, 100042&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, Operations, 8&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, AverageLatency(us), 864.5&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MinLatency(us), 1&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MaxLatency(us), 6871&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 6871&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 6871&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, Operations, 99958&lt;br/&gt;
&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, AverageLatency(us), 2993.8426839272493&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, MinLatency(us), 203&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, MaxLatency(us), 947711&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 13183&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 20975&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, Return=OK, 99958&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;


&lt;p&gt;&amp;lt;4.0.0-run&amp;gt;&lt;/p&gt;

&lt;p&gt;&lt;font color=&quot;#ff0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, RunTime(ms), 101728&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;OVERALL&amp;#93;&lt;/span&gt;, Throughput(ops/sec), 1966.0270525322428&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_Copy&amp;#93;&lt;/span&gt;, Count, 588&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_Copy&amp;#93;&lt;/span&gt;, Time(ms), 1095&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_Copy&amp;#93;&lt;/span&gt;, Time(%), 1.076399811261403&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCS_MarkSweepCompact&amp;#93;&lt;/span&gt;, Count, 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(ms), 0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%_MarkSweepCompact&amp;#93;&lt;/span&gt;, Time(%), 0.0&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GCs&amp;#93;&lt;/span&gt;, Count, 588&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME&amp;#93;&lt;/span&gt;, Time(ms), 1095&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;TOTAL_GC_TIME_%&amp;#93;&lt;/span&gt;, Time(%), 1.076399811261403&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, Operations, 99924&lt;br/&gt;
&lt;font color=&quot;#FF0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, AverageLatency(us), 3944.935470957928&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, MinLatency(us), 256&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, MaxLatency(us), 610815&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 6835&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 15999&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;READ&amp;#93;&lt;/span&gt;, Return=OK, 99924&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, Operations, 8&lt;br/&gt;
&lt;font color=&quot;#FF0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, AverageLatency(us), 1130.25&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MinLatency(us), 1&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, MaxLatency(us), 9007&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 9007&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;CLEANUP&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 9007&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, Operations, 100076&lt;br/&gt;
&lt;font color=&quot;#FF0000&quot;&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, AverageLatency(us), 4064.802370198649&lt;/font&gt;&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, MinLatency(us), 287&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, MaxLatency(us), 607743&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, 95thPercentileLatency(us), 7179&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, 99thPercentileLatency(us), 16263&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;UPDATE&amp;#93;&lt;/span&gt;, Return=OK, 100076&lt;/p&gt;</description>
                <environment></environment>
        <key id="587396">SERVER-36602</key>
            <summary>3.4.14 VS 4.0.0</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="9">Done</resolution>
                                        <assignee username="nick.brewer">Nick Brewer</assignee>
                                    <reporter username="mingyu.lee@linecorp.com">lee mingyu</reporter>
                        <labels>
                    </labels>
                <created>Mon, 13 Aug 2018 10:19:23 +0000</created>
                <updated>Tue, 16 Nov 2021 18:29:49 +0000</updated>
                            <resolved>Mon, 13 Aug 2018 15:29:12 +0000</resolved>
                                                                    <component>Admin</component>
                    <component>Concurrency</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="1974878" author="mingyu.lee@linecorp.com" created="Tue, 14 Aug 2018 02:49:23 +0000"  >&lt;p&gt;thank you for your further clarification&#160;&lt;/p&gt;</comment>
                            <comment id="1974100" author="nick.brewer" created="Mon, 13 Aug 2018 15:28:59 +0000"  >&lt;p&gt;Thanks for your report. Please note that SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support discussion please post on the [mongodb-user group|&lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/group/mongodb-user&lt;/a&gt;] or [Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag|&lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://stackoverflow.com/questions/tagged/mongodb&lt;/a&gt;]. A question like this involving more discussion would be best posted on the mongodb-user group.&lt;/p&gt;

&lt;p&gt;One thing I should mention is that MongoDB 3.6 and above introduce &lt;a href=&quot;https://docs.mongodb.com/manual/release-notes/3.6/#read-concern&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;automatic use of the &quot;majority&quot; read concern&lt;/a&gt;, which may account for at least some of the difference you&apos;re seeing.&#160;&lt;/p&gt;

&lt;p&gt;-Nick&lt;/p&gt;</comment>
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