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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-68978] Log memory allocations triggered by an operation</title>
                <link>https://jira.mongodb.org/browse/SERVER-68978</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The current problem in troubleshooting of OOM incidents often boils down to figuring out which operations were responsible for excessive memory allocations.&lt;/p&gt;

&lt;p&gt;Very often even with knowing the exact operations that were executed at the time of the incident, the memory requirements of those can only be speculated about but never known with a greater degree of confidence.&lt;/p&gt;

&lt;p&gt;This presents a pain point for the support team.&lt;/p&gt;

&lt;p&gt;This ticket is raised to explore if it is possible to log memory allocations if those happen as a result of an execution of a particular operation.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2117654">SERVER-68978</key>
            <summary>Log memory allocations triggered by an operation</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="dmitry.ryabtsev@mongodb.com">Dmitry Ryabtsev</reporter>
                        <labels>
                            <label>allocation</label>
                            <label>memory</label>
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                <created>Fri, 19 Aug 2022 05:01:51 +0000</created>
                <updated>Mon, 28 Aug 2023 16:41:52 +0000</updated>
                                                                            <component>Logging</component>
                                        <votes>4</votes>
                                    <watches>11</watches>
                                                                                                                <comments>
                            <comment id="4797674" author="louis.williams" created="Fri, 2 Sep 2022 12:18:56 +0000"  >&lt;p&gt;Another complexity with this idea is that in WiredTiger, one thread may allocate memory that is then freed by another thread. So if we tracked memory allocations, we would not have an accurate picture of how much memory is actually being used by operations. We would potentially want to exclude allocations from within WiredTiger from any reporting.&lt;/p&gt;</comment>
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