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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-16200] Profile and tune mmapv1 performance</title>
                <link>https://jira.mongodb.org/browse/SERVER-16200</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We should profile the mmapv1 storage engine and verify performance when compared with server 2.6.&lt;/p&gt;</description>
                <environment></environment>
        <key id="169758">SERVER-16200</key>
            <summary>Profile and tune mmapv1 performance</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="9">Done</resolution>
                                        <assignee username="andrew.morrow@mongodb.com">Andrew Morrow</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                    </labels>
                <created>Mon, 17 Nov 2014 20:17:56 +0000</created>
                <updated>Tue, 30 Dec 2014 20:02:33 +0000</updated>
                            <resolved>Tue, 23 Dec 2014 22:00:36 +0000</resolved>
                                                    <fixVersion>2.8.0-rc4</fixVersion>
                                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="795385" author="xgen-internal-githook" created="Tue, 30 Dec 2014 20:02:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Improve LTO integration for gcc and clang&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0777616ff7ce85292e865c0340d92aadf7ba9867&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0777616ff7ce85292e865c0340d92aadf7ba9867&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="793370" author="dan@10gen.com" created="Tue, 23 Dec 2014 22:00:36 +0000"  >&lt;p&gt;This is resolved, but there is an additional code review that should be split out from this ticket into a separate task.&lt;/p&gt;</comment>
                            <comment id="772560" author="xgen-internal-githook" created="Tue, 25 Nov 2014 18:15:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Eagerly compute StringData lengths and streamline equality checks&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ff4e5d39940f15f5fcc65e356ad3308859f68693&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ff4e5d39940f15f5fcc65e356ad3308859f68693&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="769358" author="xgen-internal-githook" created="Thu, 20 Nov 2014 20:27:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Reuse already computed field name when iterating&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d10ee8adc8265451d9fcbaae9669709618751311&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d10ee8adc8265451d9fcbaae9669709618751311&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="767031" author="xgen-internal-githook" created="Tue, 18 Nov 2014 17:14:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Eliminate some strcpy/strlen when handling namespaces&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c3b92185d0a2f30e819aff44022e92230fb55b03&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c3b92185d0a2f30e819aff44022e92230fb55b03&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="767030" author="xgen-internal-githook" created="Tue, 18 Nov 2014 17:14:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Use unordered container to track operation contexts&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/87360c5dec1916fa033dfaaf4c369ed7912f331d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/87360c5dec1916fa033dfaaf4c369ed7912f331d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="767029" author="xgen-internal-githook" created="Tue, 18 Nov 2014 17:14:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16200&quot; title=&quot;Profile and tune mmapv1 performance&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16200&quot;&gt;&lt;del&gt;SERVER-16200&lt;/del&gt;&lt;/a&gt; Eliminate a redundant strlen in ThreadSafeString&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/adb1e5f25f3f5eacbbed382426542623b67632e5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/adb1e5f25f3f5eacbbed382426542623b67632e5&lt;/a&gt;&lt;/p&gt;</comment>
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