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 ESMTP id E002E6B0012 for ; Mon, 2 May 2011 20:54:00 -0400 (EDT) Received: by qwa26 with SMTP id 26so4206363qwa.14 for ; Mon, 02 May 2011 17:53:59 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20110502191535.2D55.A69D9226@jp.fujitsu.com> References: <20110501163542.GA3204@barrios-desktop> <20110501163737.GB3204@barrios-desktop> <20110502191535.2D55.A69D9226@jp.fujitsu.com> Date: Tue, 3 May 2011 09:53:58 +0900 Message-ID: Subject: Re: [RFC][PATCH] mm: cut down __GFP_NORETRY page allocation failures From: Minchan Kim Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: Wu Fengguang , Andrew Morton , Mel Gorman , Dave Young , linux-mm , Linux Kernel Mailing List , KAMEZAWA Hiroyuki , Christoph Lameter , Dave Chinner , David Rientjes On Mon, May 2, 2011 at 7:14 PM, KOSAKI Motohiro wrote: >> On Mon, May 02, 2011 at 01:35:42AM +0900, Minchan Kim wrote: >> >> > Do you see my old patch? The patch want't incomplet but it's not bad f= or showing an idea. >> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0^^^^^^^^^^^^^= ^^^ >> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 typo : wasn't complete > > I think your idea is eligible. Wu's approach may increase throughput but Yes. it doesn't change many subtle things and make much fair but the Wu's concern is order-0 pages with __GFP_NORETRY. By his experiment, my patch doesn't help much his concern. The problem I have is I don't have any infrastructure for reproducing his experiment. :( > may decrease latency. So, do you have a plan to finish the work? I want it but the day would be after finishing inorder-putback series. :) Maybe you have a environment(8core system). If you want it, go ahead. :) Thanks, KOSAKI. --=20 Kind regards, Minchan Kim -- 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