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From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 7 Feb 2009 15:51:21 +0000 (UTC)
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Subject: svn commit: r188291 - stable/7
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Author: alc
Date: Sat Feb  7 15:51:21 2009
New Revision: 188291
URL: http://svn.freebsd.org/changeset/base/188291

Log:
  Recent changes to the kernel increasing the size of the kernel and kmem
  maps on amd64 machines should trigger ZFS users to reevaluate their
  manual tuning of the kmem map.

Modified:
  stable/7/UPDATING

Modified: stable/7/UPDATING
==============================================================================
--- stable/7/UPDATING	Sat Feb  7 15:31:23 2009	(r188290)
+++ stable/7/UPDATING	Sat Feb  7 15:51:21 2009	(r188291)
@@ -9,6 +9,13 @@ Items affecting the ports and packages s
 portupgrade.
 
 20090207:
+	ZFS users on amd64 machines with 4GB or more of RAM should
+	reevaluate their need for setting vm.kmem_size_max and
+	vm.kmem_size manually.  In fact, after recent changes to the
+	kernel, the default value of vm.kmem_size is larger than the
+	suggested manual setting in most ZFS/FreeBSD tuning guides.
+
+20090207:
 	Multi-IPv4/v6/no-IP jail support was merged to STABLE.
 	You need to rebuild jls(8) and to use the new features
 	jail(8), jexec(8) and cpuset(1) with a new kernel.