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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-10566] performance pass: idhack, findingStartCursor, other profiling and opt</title>
                <link>https://jira.mongodb.org/browse/SERVER-10566</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="86469">SERVER-10566</key>
            <summary>performance pass: idhack, findingStartCursor, other profiling and opt</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="hari.khalsa@10gen.com">hari.khalsa@10gen.com</assignee>
                                    <reporter username="hari.khalsa@10gen.com">hari.khalsa@10gen.com</reporter>
                        <labels>
                    </labels>
                <created>Mon, 19 Aug 2013 13:02:30 +0000</created>
                <updated>Thu, 2 Aug 2018 21:21:03 +0000</updated>
                            <resolved>Fri, 20 Dec 2013 22:14:45 +0000</resolved>
                                                    <fixVersion>2.5.5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="462201" author="xgen-internal-githook" created="Tue, 26 Nov 2013 19:05:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10566&quot; title=&quot;performance pass: idhack, findingStartCursor, other profiling and opt&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10566&quot;&gt;&lt;del&gt;SERVER-10566&lt;/del&gt;&lt;/a&gt; Inline MatchableDocument destructor&lt;/p&gt;

&lt;p&gt;Allows subclasses to see that it is a no-op and avoid a function call.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/37ff0bf3149d92704186147904219b062f95506b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/37ff0bf3149d92704186147904219b062f95506b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="460667" author="xgen-internal-githook" created="Fri, 22 Nov 2013 22:32:28 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10566&quot; title=&quot;performance pass: idhack, findingStartCursor, other profiling and opt&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10566&quot;&gt;&lt;del&gt;SERVER-10566&lt;/del&gt;&lt;/a&gt; Don&apos;t use modulus in ElapsedTracker&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f267bf1ff81e02185ef2a316aefa31c6459234f9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f267bf1ff81e02185ef2a316aefa31c6459234f9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="460530" author="xgen-internal-githook" created="Fri, 22 Nov 2013 19:50:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-10566&quot; title=&quot;performance pass: idhack, findingStartCursor, other profiling and opt&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-10566&quot;&gt;&lt;del&gt;SERVER-10566&lt;/del&gt;&lt;/a&gt; WorkingSet cleanup and optimization&lt;/p&gt;

&lt;p&gt;Changes:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Documented some contracts&lt;/li&gt;
	&lt;li&gt;Marked noncopyable classes as such&lt;/li&gt;
	&lt;li&gt;Changed WorkingSetID to size_t from long&lt;/li&gt;
	&lt;li&gt;Inlined WorkingSet::get since it is simple and very hot&lt;/li&gt;
	&lt;li&gt;WorkingSetMembers are now pooled and reused&lt;/li&gt;
	&lt;li&gt;Stopped using unordered_(map|set)
	&lt;ul&gt;
		&lt;li&gt;_data became a vector with freelist&lt;/li&gt;
		&lt;li&gt;_flagged became a bool on each member of _data&lt;/li&gt;
		&lt;li&gt;_computed became an embedded array&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a68075e50322910b018815ade7f7c77887cc488b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a68075e50322910b018815ade7f7c77887cc488b&lt;/a&gt;&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
&lt;/ul&gt;
</comment>
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                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="102822">SERVER-12136</issuekey>
        </issuelink>
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