svn commit: r264430 - stable/10/release/doc/en_US.ISO8859-1/relnotes

[Glen Barber]

Author: gjb
Date: Sun Apr 13 22:41:24 2014
New Revision: 264430
URL: http://svnweb.freebsd.org/changeset/base/264430

Log:
  Document r260338
  
  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	Sun Apr 13 22:41:22 2014	(r264429)
+++ stable/10/release/doc/en_US.ISO8859-1/relnotes/article.xml	Sun Apr 13 22:41:24 2014	(r264430)
@@ -118,7 +118,13 @@
   <sect2 xml:id="kernel">
     <title>Kernel Changes</title>
 
-    <para> </para>
+    <para revision="260338">The <literal>vfs.zfs.zio.use_uma</literal>
+      &man.sysctl.8; has been re-enabled.  On multi-CPU machines with
+      enough RAM, this can easily double &man.zfs.8; performance or
+      reduce CPU usage in half.  It was originally disabled due to
+      memory and <acronym>KVA</acronym> exhastion problem reports,
+      which should be resolved due to several change in the VM
+      subsystem.</para>
 
     <sect3 xml:id="kernel-virtualization">
       <title>Virtualization support</title>