From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx199.postini.com [74.125.245.199]) by kanga.kvack.org (Postfix) with SMTP id 7CB756B0267 for ; Tue, 13 Dec 2011 15:39:06 -0500 (EST) Date: Tue, 13 Dec 2011 12:38:56 -0800 From: Andi Kleen Subject: Re: [patch v3]numa: add a sysctl to control interleave allocation granularity from each node to improve I/O performance Message-ID: <20111213203856.GA6312@tassilo.jf.intel.com> References: <1323655125.22361.376.camel@sli10-conroe> <20111213190632.GA5830@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: Shaohua Li , lkml , linux-mm , Andrew Morton , Jens Axboe , lee.schermerhorn@hp.com, David Rientjes On Tue, Dec 13, 2011 at 02:12:58PM -0600, Christoph Lameter wrote: > On Tue, 13 Dec 2011, Andi Kleen wrote: > > > I would prefer to add a new policy (INTERLEAVE_MULTI or so) for this > > instead of a global sysctl, that takes the additional parameter. > > That would require a change of all scripts and code that uses > MPOL_INTERLEAVE. Lets not do that. Yes, but setting a sysctl would need the same right? It's not clear that all workloads want this. With a global switch only you cannot set it case by case. -Andi -- ak@linux.intel.com -- Speaking for myself only -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org