Author: gjb
Date: Mon Aug 25 19:45:40 2014
New Revision: 270614
URL: http://svnweb.freebsd.org/changeset/base/270614
Log:
Document r269846, vfs.zfs.arc_average_blocksize.
Sponsored by: The FreeBSD Foundation
Modified:
stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml
Modified: stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml
==============================================================================
--- stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml Mon Aug 25
19:06:31 2014 (r270613)
+++ stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml Mon Aug 25
19:45:40 2014 (r270614)
@@ -498,6 +498,18 @@
keep their active state</para>
</listitem>
</itemizedlist>
+
+ <para revision="269846">The default &man.zfs.8;
+ <acronym>ARC</acronym> hash table size has been increased,
+ and a new &man.loader.8; tunable,
+ <literal>vfs.zfs.arc_average_blocksize</literal>, has been
+ added. Previously, the hash table could be too small, which
+ would lead to long hash chains and limit performance for
+ cached reads. The
+ <literal>vfs.zfs.arc_average_blocksize</literal> tunable
+ allows overriding the default block size. The previous
+ default was 65536, and default of the new &man.loader.8;
+ tunable is 8192.</para>
</sect3>
</sect2>
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