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Implement opt.metadata_thp

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This option enables transparent huge page for base allocators (require
MADV_HUGEPAGE support).
This commit is contained in:
Qi Wang
2017-08-10 13:14:26 -07:00
committed by Qi Wang
parent d157864027
commit 8fdd9a5797
12 changed files with 118 additions and 17 deletions
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17
doc/jemalloc.xml.in
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@@ -916,6 +916,18 @@ mallctl("arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".decay",
</para></listitem>
</varlistentry>
<varlistentry id="opt.metadata_thp">
<term>
<mallctl>opt.metadata_thp</mallctl>
(<type>bool</type>)
<literal>r-</literal>
</term>
<listitem><para>If true, allow jemalloc to use transparent huge page
(THP) for internal metadata (see <link
linkend="stats.metadata">stats.metadata</link> for details). This
option is disabled by default.</para></listitem>
</varlistentry>
<varlistentry id="opt.retain">
<term>
<mallctl>opt.retain</mallctl>
@@ -2187,7 +2199,10 @@ struct extent_hooks_s {
metadata structures (see <link
linkend="stats.arenas.i.base"><mallctl>stats.arenas.&lt;i&gt;.base</mallctl></link>)
and internal allocations (see <link
linkend="stats.arenas.i.internal"><mallctl>stats.arenas.&lt;i&gt;.internal</mallctl></link>).</para></listitem>
linkend="stats.arenas.i.internal"><mallctl>stats.arenas.&lt;i&gt;.internal</mallctl></link>).
Transparent huge page (enabled with <link
linkend="opt.metadata_thp">opt.metadata_thp</link>) usage is not
considered.</para></listitem>
</varlistentry>
<varlistentry id="stats.resident">