From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Christoph Lameter <clameter@sgi.com>
Subject: Re: [PATCH] 2.6.23-rc1-mm1 - fix missing numa_zonelist_order sysctl
Date: Fri, 3 Aug 2007 09:27:55 +0900 [thread overview]
Message-ID: <20070803092755.55220aa0.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <1186067258.5040.33.camel@localhost>
On Thu, 02 Aug 2007 11:07:38 -0400
Lee Schermerhorn <Lee.Schermerhorn@hp.com> wrote:
> Of course, I don't have any idea of what is a "reasonable amount".
> Guess I could look at non-movable zone memory usage in a system at
> typical or peak load to get an idea. Anyone have any data in this
> regard?
>
I'm sorry that I have no data and idea.
ZONE_MOVABLE is too young to be used under business workload...
just I feel...
Considering i686 which divides memory into NORMAL and HIGHMEM, it seems
that 4G to 8G servers looks stable under various workload in my experience.
Then, at least, 12.5% to 25% of "Total Memory - Hugepages" memory should be
under ZONE_NORMAL. But this is from experience of 32bit/SMP :(
Thanks,
-Kame
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next prev parent reply other threads:[~2007-08-03 0:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-01 19:02 Lee Schermerhorn
2007-08-02 0:44 ` KAMEZAWA Hiroyuki
2007-08-02 15:07 ` Lee Schermerhorn
2007-08-03 0:27 ` KAMEZAWA Hiroyuki [this message]
2007-08-02 16:14 ` Mel Gorman
2007-08-02 16:18 ` Mel Gorman
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