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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-71786] Move profiling writes into a profile writing service</title>
                <link>https://jira.mongodb.org/browse/SERVER-71786</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As part of the PR discussion of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-59673&quot; title=&quot;Investigate better solutions for fixing the deadlock issue in profiling&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-59673&quot;&gt;&lt;del&gt;SERVER-59673&lt;/del&gt;&lt;/a&gt; the possibility of moving profile operations into a separate service came up.&lt;/p&gt;

&lt;p&gt;This would resolve some potential overhead issues introduced with the changes in that ticket as it will now require a new Client creation on every profiling write operation. This client creation is potentially contentious due to a &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0465129215092c9c7fdf1a168cb56bc1cdefb855/src/mongo/db/service_context.cpp#L177&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;lock acquistion&lt;/a&gt; in ServiceContext.&lt;/p&gt;

&lt;p&gt;One observations to have is that currently in a multi-document transaction the profile write will still hold all the locks held during the operation. In all other cases we do not holkd any locks at that point.&lt;/p&gt;

&lt;p&gt;Moving to a write service will also be a change in behaviour from the perspective of the end-user. Currently if an operation finishes and writes its profile, the profile is immediately available once the operation returns to the user. Using a service makes this profile availability separate from the operation being finished as both operations are independent. As a result, the profile will eventually be available after an operation finishes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2200499">SERVER-71786</key>
            <summary>Move profiling writes into a profile writing service</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</reporter>
                        <labels>
                    </labels>
                <created>Fri, 2 Dec 2022 10:51:57 +0000</created>
                <updated>Tue, 17 Jan 2023 16:54:30 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="5051698" author="JIRAUSER1258161" created="Tue, 13 Dec 2022 16:58:40 +0000"  >&lt;p&gt;We think this is larger than a single ticket, and likely a project.&lt;/p&gt;</comment>
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