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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-39959] Make pooled js scope re-use time based</title>
                <link>https://jira.mongodb.org/browse/SERVER-39959</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Current js scope reuse is based on the number of times used.  I.e. a scope will be re-used 10 times, then thrown away.  This is suboptimal for workloads that don&apos;t perform large scans.&lt;/p&gt;

&lt;p&gt;Switching to a time based reuse strategy gives the same benefits as a low reuse count (limiting memory consumption and avoiding accumulating too much debris in the scopes), while improving performance for those more targeted workloads&lt;/p&gt;</description>
                <environment></environment>
        <key id="709654">SERVER-39959</key>
            <summary>Make pooled js scope re-use time based</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="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="13201">Fixed</resolution>
                                        <assignee username="mira.carey@mongodb.com">Mira Carey</assignee>
                                    <reporter username="mira.carey@mongodb.com">Mira Carey</reporter>
                        <labels>
                    </labels>
                <created>Tue, 5 Mar 2019 14:24:22 +0000</created>
                <updated>Sun, 29 Oct 2023 22:23:18 +0000</updated>
                            <resolved>Wed, 6 Mar 2019 17:15:59 +0000</resolved>
                                                    <fixVersion>4.1.9</fixVersion>
                                    <component>JavaScript</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2172881" author="xgen-internal-githook" created="Wed, 6 Mar 2019 17:15:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Jason Carey&apos;, &apos;username&apos;: &apos;hanumantmk&apos;, &apos;email&apos;: &apos;jcarey@argv.me&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-39959&quot; title=&quot;Make pooled js scope re-use time based&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-39959&quot;&gt;&lt;del&gt;SERVER-39959&lt;/del&gt;&lt;/a&gt; Make js scope reuse time based&lt;/p&gt;

&lt;p&gt;Current js scope reuse is based on the number of times used. I.e. a&lt;br/&gt;
scope will be re-used 10 times, then thrown away. This is suboptimal for&lt;br/&gt;
workloads that don&apos;t perform large scans.&lt;/p&gt;

&lt;p&gt;Switching to a time based reuse strategy gives the same benefits as a&lt;br/&gt;
low reuse count (limiting memory consumption and avoiding accumulating&lt;br/&gt;
too much debris in the scopes), while improving performance for those&lt;br/&gt;
more targeted workloads&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a6a424f3961bec9e2311fa78a10e563d98ed2e88&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a6a424f3961bec9e2311fa78a10e563d98ed2e88&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="709660">SERVER-39962</issuekey>
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