From: William Lee Irwin III <wli@holomorphy.com>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: Adam Litke <agl@us.ibm.com>,
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: Thu, 10 Nov 2005 16:51:19 -0800 [thread overview]
Message-ID: <20051111005119.GQ29402@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.62.0511101521180.16770@schroedinger.engr.sgi.com>
On Thu, Nov 10, 2005 at 03:27:12PM -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>
Long intended to have been corrected. Thanks.
Acked-by: William Irwin <wli@holomorphy.com>
-- wli
WARNING: multiple messages have this Message-ID (diff)
From: William Lee Irwin III <wli@holomorphy.com>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: Adam Litke <agl@us.ibm.com>,
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: Thu, 10 Nov 2005 16:51:19 -0800 [thread overview]
Message-ID: <20051111005119.GQ29402@holomorphy.com> (raw)
In-Reply-To: <Pine.LNX.4.62.0511101521180.16770@schroedinger.engr.sgi.com>
On Thu, Nov 10, 2005 at 03:27:12PM -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>
Long intended to have been corrected. Thanks.
Acked-by: William Irwin <wli@holomorphy.com>
-- wli
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next prev parent reply other threads:[~2005-11-11 1:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-10 23:27 [PATCH] dequeue a huge page near to this node Christoph Lameter
2005-11-10 23:27 ` Christoph Lameter
2005-11-10 23:34 ` Chen, Kenneth W
2005-11-10 23:34 ` Chen, Kenneth W
2005-11-11 0:44 ` Christoph Lameter
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 0:51 ` William Lee Irwin III [this message]
2005-11-11 0:51 ` William Lee Irwin III
2005-11-11 14:19 ` Adam Litke
2005-11-11 14:19 ` Adam Litke
2005-11-11 17:33 ` Christoph Lameter
2005-11-11 17:33 ` Christoph Lameter
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