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Add extents information to mallocstats output

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- Show number/bytes of extents of each size that are dirty, muzzy, retained.
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Tyler Etzel
2018-07-31 09:49:49 -07:00
committed by David Goldblatt
parent 33f1aa5bad
commit c14e6c0819
11 changed files with 307 additions and 15 deletions
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33
doc/jemalloc.xml.in
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@@ -433,10 +433,11 @@ for (i = 0; i < nbins; i++) {
arena statistics, respectively; <quote>b</quote> and <quote>l</quote> can
be specified to omit per size class statistics for bins and large objects,
respectively; <quote>x</quote> can be specified to omit all mutex
statistics. Unrecognized characters are silently ignored. Note that
thread caching may prevent some statistics from being completely up to
date, since extra locking would be required to merge counters that track
thread cache operations.</para>
statistics; <quote>e</quote> can be used to omit extent statistics.
Unrecognized characters are silently ignored. Note that thread caching
may prevent some statistics from being completely up to date, since extra
locking would be required to merge counters that track thread cache
operations.</para>
<para>The <function>malloc_usable_size()</function> function
returns the usable size of the allocation pointed to by
@@ -2925,6 +2926,30 @@ struct extent_hooks_s {
counters</link>.</para></listitem>
</varlistentry>
<varlistentry id="stats.arenas.i.extents.n">
<term>
<mallctl>stats.arenas.&lt;i&gt;.extents.&lt;j&gt;.n{extent_type}</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
[<option>--enable-stats</option>]
</term>
<listitem><para> Number of extents of the given type in this arena in
the bucket corresponding to page size index &lt;j&gt;. The extent type
is one of dirty, muzzy, or retained.</para></listitem>
</varlistentry>
<varlistentry id="stats.arenas.i.extents.bytes">
<term>
<mallctl>stats.arenas.&lt;i&gt;.extents.&lt;j&gt;.{extent_type}_bytes</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
[<option>--enable-stats</option>]
</term>
<listitem><para> Sum of the bytes managed by extents of the given type
in this arena in the bucket corresponding to page size index &lt;j&gt;.
The extent type is one of dirty, muzzy, or retained.</para></listitem>
</varlistentry>
<varlistentry id="stats.arenas.i.lextents.j.nmalloc">
<term>
<mallctl>stats.arenas.&lt;i&gt;.lextents.&lt;j&gt;.nmalloc</mallctl>