From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by e3.ny.us.ibm.com (8.12.11/8.12.11) with ESMTP id jABEKK7Y025414 for ; Fri, 11 Nov 2005 09:20:20 -0500 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay02.pok.ibm.com (8.12.10/NCO/VERS6.7) with ESMTP id jABEKKPu114118 for ; Fri, 11 Nov 2005 09:20:20 -0500 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11/8.13.3) with ESMTP id jABEKJE4013865 for ; Fri, 11 Nov 2005 09:20:20 -0500 Subject: Re: [PATCH] dequeue a huge page near to this node From: Adam Litke In-Reply-To: References: Content-Type: text/plain Date: Fri, 11 Nov 2005 08:19:25 -0600 Message-Id: <1131718765.13502.8.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kenneth.w.chen@intel.com, akpm@osdl.org List-ID: 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 I'll add my voice to the chorus of aye's. -- Adam Litke - (agl at us.ibm.com) IBM Linux Technology Center -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org