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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>
    </build-info>


<item>
            <title>[SERVER-4683] switch allocator - tcmalloc or jemalloc</title>
                <link>https://jira.mongodb.org/browse/SERVER-4683</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;specifically scanandorder and javascript have been mentioned&lt;/p&gt;</description>
                <environment></environment>
        <key id="28330">SERVER-4683</key>
            <summary>switch allocator - tcmalloc or jemalloc</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="9">Done</resolution>
                                        <assignee username="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="dwight@mongodb.com">Dwight Merriman</reporter>
                        <labels>
                    </labels>
                <created>Sat, 14 Jan 2012 19:22:13 +0000</created>
                <updated>Mon, 11 Jul 2016 18:34:57 +0000</updated>
                            <resolved>Fri, 10 Aug 2012 21:24:07 +0000</resolved>
                                                    <fixVersion>2.2.0-rc1</fixVersion>
                                    <component>Internal Code</component>
                    <component>Performance</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="591755" author="xgen-internal-githook" created="Wed, 21 May 2014 15:53:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;benety&apos;, u&apos;name&apos;: u&apos;Benety Goh&apos;, u&apos;email&apos;: u&apos;benety@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8995&quot; title=&quot;upgrade gperftools from 2.0 to 2.2&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8995&quot;&gt;&lt;del&gt;SERVER-8995&lt;/del&gt;&lt;/a&gt; added gperftools-2.2 generated headers and SConscript files. cpu-profiler build tweaks.&lt;/p&gt;

&lt;p&gt;config-10gen_macos.h:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;generated by: ./configure&lt;/li&gt;
	&lt;li&gt;disabled HAVE_LIBUNWIND_H&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;config-10gen_linux.h:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;generated by: ./configure --enable-minimal&lt;/li&gt;
	&lt;li&gt;applied config-10gen_linux.h changes made in src/gperftools-2.0/src/config-10gen_linux.h in commit eee3fe4ce66c7bbda9329a3c8bd8e3549b07437c:&lt;br/&gt;
    &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Support the imported tcmalloc, ystem tcmalloc or the default system allocator library.&lt;br/&gt;
    Pass --allocator=tcmalloc (default on Linux) or --allocator=system (default elsewhere)&lt;br/&gt;
    to control which allocator is used, and -&lt;del&gt;use-system-tcmalloc to use the system&lt;/del&gt;&lt;br/&gt;
    installed tcmalloc instead of the one in the mongo source tree if you use --allocator=tcmalloc.&lt;/li&gt;
	&lt;li&gt;applied config-10gen_linux.h changes made in src/gperftools-2.0/src/config-10gen_linux.h in commit 498d9102e00e61ca2d41b7db1448969728884b50:&lt;br/&gt;
    &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-6758&quot; title=&quot;cpu profiler doesn&amp;#39;t work with embedded tcmalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-6758&quot;&gt;&lt;del&gt;SERVER-6758&lt;/del&gt;&lt;/a&gt; - use third_party profiler when using --use-cpu-profiler&lt;br/&gt;
                  does require libunwind installed on system&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;SCons --use-cpu-profiler changes:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;enabled HAVE_UNWIND_H for use-cpu-profile&lt;/li&gt;
	&lt;li&gt;excluded cpu profile commands from mongos&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/219bcdbc9b4dd1be804cf5385624fdc1557b3467&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/219bcdbc9b4dd1be804cf5385624fdc1557b3467&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="155079" author="auto" created="Mon, 20 Aug 2012 21:05:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-14T08:33:23-07:00&apos;, u&apos;email&apos;: u&apos;ian.whalen@gmail.com&apos;, u&apos;name&apos;: u&apos;Ian Whalen&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Add license for tcmalloc&lt;br/&gt;
Branch: v2.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1a6eb9d65223ddf094188ed5af124e04020e2a19&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1a6eb9d65223ddf094188ed5af124e04020e2a19&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="154097" author="auto" created="Thu, 16 Aug 2012 19:22:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-14T08:33:23-07:00&apos;, u&apos;email&apos;: u&apos;ian.whalen@gmail.com&apos;, u&apos;name&apos;: u&apos;Ian Whalen&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Add license for tcmalloc&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/783aaff18cc7880a4bdbf9d0c52a5b56491b5933&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/783aaff18cc7880a4bdbf9d0c52a5b56491b5933&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152469" author="auto" created="Fri, 10 Aug 2012 22:15:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T15:15:16-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Only use embedded tcmalloc on x86_64 linux by default.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/572d39f494ea5aa292c03e24c793875a9b059c63&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/572d39f494ea5aa292c03e24c793875a9b059c63&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152461" author="auto" created="Fri, 10 Aug 2012 21:50:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T14:50:35-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Fix build break on older SCons, redux.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4c59df9c812fe88f663d102e570c9e5fcf994062&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4c59df9c812fe88f663d102e570c9e5fcf994062&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152460" author="auto" created="Fri, 10 Aug 2012 21:46:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T14:46:14-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Fix build break on older SCons.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9a3b9ff7e0549dedbb1889b4ef25613fb6351681&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9a3b9ff7e0549dedbb1889b4ef25613fb6351681&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152452" author="auto" created="Fri, 10 Aug 2012 21:22:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T10:32:42-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Support the imported tcmalloc, ystem tcmalloc or the default system allocator library.&lt;/p&gt;

&lt;p&gt;Pass --allocator=tcmalloc (default on Linux) or --allocator=system (default elsewhere)&lt;br/&gt;
to control which allocator is used, and -&lt;del&gt;use-system-tcmalloc to use the system&lt;/del&gt;&lt;br/&gt;
installed tcmalloc instead of the one in the mongo source tree if you use --allocator=tcmalloc.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/eee3fe4ce66c7bbda9329a3c8bd8e3549b07437c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/eee3fe4ce66c7bbda9329a3c8bd8e3549b07437c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152451" author="auto" created="Fri, 10 Aug 2012 21:22:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T10:47:06-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Config files for tcmalloc on Linux built by 10gen.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b49bac3c24d57d412a623545c9a3c367ca595b7e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b49bac3c24d57d412a623545c9a3c367ca595b7e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="152450" author="auto" created="Fri, 10 Aug 2012 21:22:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-08-10T10:45:43-07:00&apos;, u&apos;email&apos;: u&apos;schwerin@10gen.com&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; Import gperftools source files.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ff75718dd7ae6c176efab68f91161806ffab3ef0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ff75718dd7ae6c176efab68f91161806ffab3ef0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="79922" author="auto" created="Sun, 15 Jan 2012 02:38:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;dwight&apos;, u&apos;name&apos;: u&apos;dwight&apos;, u&apos;email&apos;: u&apos;dwight@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; use stackbufbuilder in stringbuilder. this is a tweak and does not solve the jira,&lt;br/&gt;
but it&apos;s less mallocs so tagged thereof.  might be helpful as a couple semi-hot paths (update, geo)&lt;br/&gt;
use StringBuilder&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e45f8d997c1593d1e9e8bf32f22b46ebc980a1e2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e45f8d997c1593d1e9e8bf32f22b46ebc980a1e2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="79901" author="auto" created="Sat, 14 Jan 2012 21:34:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;dwight&apos;, u&apos;name&apos;: u&apos;dwight&apos;, u&apos;email&apos;: u&apos;dwight@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; the old resize code for bufbuilder was doubling but was not staying power&lt;br/&gt;
of two aligned&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2941743aa0ec1cc1f35ee73fbe69b32ee8ffbdc6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2941743aa0ec1cc1f35ee73fbe69b32ee8ffbdc6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="79885" author="auto" created="Sat, 14 Jan 2012 19:39:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;dwight&apos;, u&apos;name&apos;: u&apos;dwight&apos;, u&apos;email&apos;: u&apos;dwight@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4683&quot; title=&quot;switch allocator - tcmalloc or jemalloc&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4683&quot;&gt;&lt;del&gt;SERVER-4683&lt;/del&gt;&lt;/a&gt; this commit is only a tweak, but the bufbuilder estimate was always too small&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fa0705dc9c10c7a702ecb52764b14f03cfac8dcb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fa0705dc9c10c7a702ecb52764b14f03cfac8dcb&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="47490">DOCS-420</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="10362">SERVER-188</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="12597">SERVER-1517</issuekey>
        </issuelink>
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