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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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            <title>[SERVER-44031] Investigate a packed format for operation session info</title>
                <link>https://jira.mongodb.org/browse/SERVER-44031</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The operation session info for a command has to parse it&apos;s member fields out of the soup of the top level attributes for a command.  I&apos;d like to investigate packing those fields into a fixed width payload (i.e. one top level field, storing a bindata) and seeing if a request that packed data in such a manner was faster to parse than one using the current flow.&lt;/p&gt;

&lt;p&gt;The main places to make this change would be in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/db/initialize_operation_session_info.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/db/initialize_operation_session_info.cpp&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;and in the corresponding idl file: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/db/logical_session_id.idl#L115-L139&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/db/logical_session_id.idl#L115-L139&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;After making that synthetic change, we should try out running a localized performance test (using one of the existing network interface integration tests is likely to be easiest: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/executor/non_auth_task_executor_integration_test.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/380711ea7dba41cb372a12a8d5258fdc124a0d23/src/mongo/executor/non_auth_task_executor_integration_test.cpp&lt;/a&gt;) and measuring what kind of results we can get&lt;/p&gt;</description>
                <environment></environment>
        <key id="970608">SERVER-44031</key>
            <summary>Investigate a packed format for operation session info</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="mira.carey@mongodb.com">Mira Carey</reporter>
                        <labels>
                    </labels>
                <created>Tue, 15 Oct 2019 19:50:32 +0000</created>
                <updated>Tue, 5 Nov 2019 22:33:51 +0000</updated>
                            <resolved>Tue, 5 Nov 2019 22:33:51 +0000</resolved>
                                                                    <component>Networking</component>
                                        <votes>0</votes>
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