Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757360AbZFPOvm (ORCPT ); Tue, 16 Jun 2009 10:51:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754064AbZFPOvf (ORCPT ); Tue, 16 Jun 2009 10:51:35 -0400 Received: from smtp3.ultrahosting.com ([74.213.175.254]:49294 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753063AbZFPOve (ORCPT ); Tue, 16 Jun 2009 10:51:34 -0400 Date: Tue, 16 Jun 2009 10:51:05 -0400 (EDT) From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Mel Gorman cc: KOSAKI Motohiro , Andrew Morton , riel@redhat.com, fengguang.wu@intel.com, linuxram@us.ibm.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Johannes Weiner Subject: Re: [PATCH 0/3] Fix malloc() stall in zone_reclaim() and bring behaviour more in line with expectations V3 In-Reply-To: <20090616134423.GD14241@csn.ul.ie> Message-ID: References: <20090615163018.B43A.A69D9226@jp.fujitsu.com> <20090615105651.GD23198@csn.ul.ie> <20090616202157.99AF.A69D9226@jp.fujitsu.com> <20090616134423.GD14241@csn.ul.ie> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 712 Lines: 15 On Tue, 16 Jun 2009, Mel Gorman wrote: > I don't have a particular workload in mind to be perfectly honest. I'm just not > convinced of the wisdom of trying to unmap pages by default in zone_reclaim() > just because the NUMA distances happen to be large. zone reclaim = 1 is supposed to be light weight with minimal impact. The intend was just to remove potentially unused pagecache pages so that node local allocations can succeed again. So lets not unmap pages. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/