From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id E06A88D0040 for ; Sun, 3 Apr 2011 14:45:18 -0400 (EDT) Date: Sun, 3 Apr 2011 13:45:15 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 0/3] Unmapped page cache control (v5) In-Reply-To: <20110403184514.AE4E.A69D9226@jp.fujitsu.com> Message-ID: References: <20110401221921.A890.A69D9226@jp.fujitsu.com> <20110403184514.AE4E.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: Balbir Singh , linux-mm@kvack.org, akpm@linux-foundation.org, npiggin@kernel.dk, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kamezawa.hiroyu@jp.fujitsu.com, Mel Gorman , Minchan Kim On Sun, 3 Apr 2011, KOSAKI Motohiro wrote: > 1) Some bios don't have such knob. btw, OK, yes, *I* can switch NUMA off completely > because I don't have such bios. 2) bios level turning off makes some side effects, > example, scheduler load balancing don't care numa anymore. Well then lets add a kernel parameter that switches all NUMA off. Otherwise: If you just run a kernel build without NUMA support then you have a similar effect. Re #2) If you have the system toss processes around the system then the load balancing heuristics does not bring you any benefit. -- 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