Date: Mon, 25 Aug 2014 19:45:40 +0000 (UTC) From: Glen Barber <gjb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r270614 - stable/10/release/doc/en_US.ISO8859-1/relnotes Message-ID: <201408251945.s7PJje1T095764@svn.freebsd.org>
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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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