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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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<item>
            <title>[SERVER-6603] Performance -- remove remapLock code from Windows build</title>
                <link>https://jira.mongodb.org/browse/SERVER-6603</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A &quot;remapLock&quot; critical section was added to the Windows version to try to prevent MapViewOfFileEx failures, but we were unable to make the code bulletproof using this method and eventually solved it a different way.  Performance tests show that this code cause a 3% loss of performance on some tests, so we should just remove this code to get this performance back.&lt;/p&gt;</description>
                <environment>Windows</environment>
        <key id="45437">SERVER-6603</key>
            <summary>Performance -- remove remapLock code from Windows build</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="tad">Tad Marshall</assignee>
                                    <reporter username="tad">Tad Marshall</reporter>
                        <labels>
                            <label>Windows</label>
                    </labels>
                <created>Thu, 26 Jul 2012 13:05:11 +0000</created>
                <updated>Mon, 11 Jul 2016 17:57:28 +0000</updated>
                            <resolved>Wed, 1 Aug 2012 14:29:07 +0000</resolved>
                                    <version>2.2.0-rc0</version>
                                    <fixVersion>2.2.0-rc1</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="149462" author="auto" created="Wed, 1 Aug 2012 14:23:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-07-26T06:08:17-07:00&apos;, u&apos;email&apos;: u&apos;tad@10gen.com&apos;, u&apos;name&apos;: u&apos;Tad Marshall&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6603&quot; title=&quot;Performance -- remove remapLock code from Windows build&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6603&quot;&gt;&lt;del&gt;SERVER-6603&lt;/del&gt;&lt;/a&gt; remove remapLock and hook functions (Windows)&lt;/p&gt;

&lt;p&gt;Remove the code that tried to lock out allocation of virtual memory&lt;br/&gt;
while the Windows version of remapPrivateView was remapping a memory-&lt;br/&gt;
mapped file.  It didn&apos;t solve the problem but did affect performance.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/790a4f7b7097be14709f37729e716862102078dc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/790a4f7b7097be14709f37729e716862102078dc&lt;/a&gt;&lt;/p&gt;</comment>
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