project-base/server-skynet-source-3rd-jemalloc
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Implement the prof.gdump mallctl.

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This feature makes it possible to toggle the gdump feature on/off during
program execution, whereas the the opt.prof_dump mallctl value can only
be set during program startup.

This resolves #72.
This commit is contained in:
Jason Evans
2015-01-25 21:16:57 -08:00
parent 41f2e692f6
commit 5b8ed5b7c9
7 changed files with 133 additions and 10 deletions
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28
doc/jemalloc.xml.in
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@@ -1215,13 +1215,11 @@ malloc_conf = "xmalloc:true";]]></programlisting>
<literal>r-</literal>
[<option>--enable-prof</option>]
</term>
<listitem><para>Trigger a memory profile dump every time the total
virtual memory exceeds the previous maximum. Profiles are dumped to
files named according to the pattern
<filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.u&lt;useq&gt;.heap</filename>,
where <literal>&lt;prefix&gt;</literal> is controlled by the <link
linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link>
option. This option is disabled by default.</para></listitem>
<listitem><para>Set the initial state of <link
linkend="prof.gdump"><mallctl>prof.gdump</mallctl></link>, which when
enabled triggers a memory profile dump every time the total virtual
memory exceeds the previous maximum. This option is disabled by
default.</para></listitem>
</varlistentry>
<varlistentry id="opt.prof_final">
@@ -1687,6 +1685,22 @@ malloc_conf = "xmalloc:true";]]></programlisting>
option.</para></listitem>
</varlistentry>
<varlistentry id="prof.gdump">
<term>
<mallctl>prof.gdump</mallctl>
(<type>bool</type>)
<literal>rw</literal>
[<option>--enable-prof</option>]
</term>
<listitem><para>When enabled, trigger a memory profile dump every time
the total virtual memory exceeds the previous maximum. Profiles are
dumped to files named according to the pattern
<filename>&lt;prefix&gt;.&lt;pid&gt;.&lt;seq&gt;.u&lt;useq&gt;.heap</filename>,
where <literal>&lt;prefix&gt;</literal> is controlled by the <link
linkend="opt.prof_prefix"><mallctl>opt.prof_prefix</mallctl></link>
option.</para></listitem>
</varlistentry>
<varlistentry id="prof.reset">
<term>
<mallctl>prof.reset</mallctl>