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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-39460] Bring our tcmalloc page and slab size adjustments into gperftools-2.7</title>
                <link>https://jira.mongodb.org/browse/SERVER-39460</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/commit/99436618a0fe429ae5519b02e13f0b22cac5eba1#diff-ded71601ab18aa334cb4b9ec4b0eb48b]&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;[https://github.com/mongodb/mongo/commit/99436618a0fe429ae5519b02e13f0b22cac5eba1&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&quot;&quot;&quot;Halve tcmalloc page size and the size of the smaller slabs - this (worst case) should halve fragmentation for those sizes. Moving the page size down helps with fitting for slab sizes like 20k. No measurable perf impact on our microbenchmark suite, though it&apos;s definitely going to hit the system allocator more. Drop size classes for things above 16K. They&apos;re not of much use as they&apos;re all 1 object per slab (though they could be held in the thread cache).&quot;&quot;&quot;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="686146">SERVER-39460</key>
            <summary>Bring our tcmalloc page and slab size adjustments into gperftools-2.7</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="billy.donahue@mongodb.com">Billy Donahue</assignee>
                                    <reporter username="billy.donahue@mongodb.com">Billy Donahue</reporter>
                        <labels>
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                <created>Fri, 8 Feb 2019 17:45:31 +0000</created>
                <updated>Sun, 29 Oct 2023 22:24:16 +0000</updated>
                            <resolved>Fri, 22 Mar 2019 18:51:21 +0000</resolved>
                                                    <fixVersion>4.1.10</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2162118" author="billy.donahue" created="Mon, 25 Feb 2019 20:18:40 +0000"  >&lt;p&gt;Reviewing on GitHub per the &quot;Issue Links&quot;&lt;/p&gt;</comment>
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