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            <title>[SERVER-20779] Oplog performance on primary does not scale</title>
                <link>https://jira.mongodb.org/browse/SERVER-20779</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;32 threads insert, 24 CPU box.&lt;br/&gt;
standalone: 1.15M insert/s&lt;br/&gt;
with oplog: 186K insert/s&lt;br/&gt;
Believed to be single threading in logOp from OplogHack mutex.&lt;br/&gt;
Contention from delete holding mutex whilst walking DLL is linear with list size.&lt;br/&gt;
Proposed fix of O(1) delete by retaining pointer handle to reference back&lt;/p&gt;</description>
                <environment></environment>
        <key id="233120">SERVER-20779</key>
            <summary>Oplog performance on primary does not scale</summary>
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                        <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>
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                                    <resolution id="9">Done</resolution>
                                        <assignee username="backlog-server-tuning">Backlog - Tuning Team</assignee>
                                    <reporter username="martin.bligh">Martin Bligh</reporter>
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                <created>Tue, 6 Oct 2015 16:43:36 +0000</created>
                <updated>Wed, 24 Aug 2016 19:46:53 +0000</updated>
                            <resolved>Wed, 24 Aug 2016 19:46:53 +0000</resolved>
                                                                    <component>Replication</component>
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