From: Adam Litke <agl@us.ibm.com>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
kenneth.w.chen@intel.com, akpm@osdl.org
Subject: Re: [PATCH] dequeue a huge page near to this node
Date: Fri, 11 Nov 2005 08:19:25 -0600 [thread overview]
Message-ID: <1131718765.13502.8.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.62.0511101521180.16770@schroedinger.engr.sgi.com>
On Thu, 2005-11-10 at 15:27 -0800, Christoph Lameter wrote:
> The following patch changes the dequeueing to select a huge page near
> the node executing instead of always beginning to check for free
> nodes from node 0. This will result in a placement of the huge pages near
> the executing processor improving performance.
>
> The existing implementation can place the huge pages far away from
> the executing processor causing significant degradation of performance.
> The search starting from zero also means that the lower zones quickly
> run out of memory. Selecting a huge page near the process distributed the
> huge pages better.
>
> Signed-off-by: Christoph Lameter <clameter@sgi.com>
I'll add my voice to the chorus of aye's.
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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next prev parent reply other threads:[~2005-11-11 14:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-10 23:27 Christoph Lameter
2005-11-10 23:34 ` Chen, Kenneth W
2005-11-11 0:44 ` Christoph Lameter
2005-11-11 0:51 ` William Lee Irwin III
2005-11-11 0:51 ` William Lee Irwin III
2005-11-11 14:19 ` Adam Litke [this message]
2005-11-11 17:33 ` Christoph Lameter
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