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        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-46683] Profile the slow path of the sdam rsm</title>
                <link>https://jira.mongodb.org/browse/SERVER-46683</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We need performance coverage of the slow path of the RSM, which is engaged when a server selection cannot immediately return an answer.&lt;/p&gt;

&lt;p&gt;Topology: 3 shard / 3 replica each, 1 config, 1 mongos&lt;/p&gt;

&lt;p&gt;Test scenario 1:&lt;br/&gt;
1. start 50% read/50% write workload running&lt;br/&gt;
2. every x ms concurrently choose a server and kill it&lt;br/&gt;
3. measure latency (50, 90, 95 percentile) &amp;amp; throughput of the reads and writes&lt;/p&gt;

&lt;p&gt;Test scenario 2:&lt;br/&gt;
1. start 50% read/50% write workload&lt;br/&gt;
2. every x ms concurrently choose a chunk and move it to another shard&lt;br/&gt;
3. measure latency (50, 90, 95 percentile) throughput of the reads and writes&lt;/p&gt;

&lt;p&gt;Both tests should run long enough that many kills or moveChunks can occur during the workload.&lt;/p&gt;

&lt;p&gt;We want to compare the metrics to the old RSM (now called scanning_replica_set_monitor) and fix any negative impact of the new implementation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1241061">SERVER-46683</key>
            <summary>Profile the slow path of the sdam rsm</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="lamont.nelson@mongodb.com">Lamont Nelson</assignee>
                                    <reporter username="lamont.nelson@mongodb.com">Lamont Nelson</reporter>
                        <labels>
                    </labels>
                <created>Fri, 6 Mar 2020 19:34:37 +0000</created>
                <updated>Fri, 8 May 2020 17:43:33 +0000</updated>
                            <resolved>Fri, 8 May 2020 17:43:33 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                        <attachments>
                            <attachment id="251848" name="scanning2.perf.dat" size="1263" author="lamont.nelson@mongodb.com" created="Tue, 10 Mar 2020 22:54:07 +0000"/>
                            <attachment id="251849" name="sdam2.perf.dat" size="1263" author="lamont.nelson@mongodb.com" created="Tue, 10 Mar 2020 22:54:07 +0000"/>
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