From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id AF3E76B004F for ; Thu, 13 Aug 2009 12:13:04 -0400 (EDT) Message-ID: <4A843B72.6030204@redhat.com> Date: Thu, 13 Aug 2009 19:12:34 +0300 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [RFC] respect the referenced bit of KVM guest pages? References: <20090806100824.GO23385@random.random> <4A7AD5DF.7090801@redhat.com> <20090807121443.5BE5.A69D9226@jp.fujitsu.com> <20090812074820.GA29631@localhost> <4A82D24D.6020402@redhat.com> <20090813010356.GA7619@localhost> <4A843565.3010104@redhat.com> In-Reply-To: <4A843565.3010104@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Rik van Riel Cc: Wu Fengguang , KOSAKI Motohiro , Andrea Arcangeli , "Dike, Jeffrey G" , "Yu, Wilfred" , "Kleen, Andi" , Hugh Dickins , Andrew Morton , Christoph Lameter , Mel Gorman , LKML , linux-mm List-ID: On 08/13/2009 06:46 PM, Rik van Riel wrote: > We need to ignore the referenced bit on active anon pages > on very large systems, but it could indeed be helpful to > respect the referenced bit on smaller systems. > > I have no idea where the cut-off between them would be. > > Maybe at inactive_ratio <= 4 ? Why do we need to ignore the referenced bit in such cases? To avoid overscanning? -- error compiling committee.c: too many arguments to function -- 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