From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id D8C396B003D for ; Thu, 30 Apr 2009 08:00:00 -0400 (EDT) Received: by gxk20 with SMTP id 20so2627193gxk.14 for ; Thu, 30 Apr 2009 04:59:59 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20090429130430.4B11.A69D9226@jp.fujitsu.com> References: <20090428090916.GC17038@localhost> <20090428120818.GH22104@mit.edu> <20090429130430.4B11.A69D9226@jp.fujitsu.com> Date: Thu, 30 Apr 2009 20:59:59 +0900 Message-ID: <2f11576a0904300459t61ae9619tcf8defacfc94f79@mail.gmail.com> Subject: Re: Swappiness vs. mmap() and interactive response From: KOSAKI Motohiro Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org To: Theodore Tso , Wu Fengguang , Peter Zijlstra , KOSAKI Motohiro , Elladan , linux-kernel@vger.kernel.org, linux-mm , Rik van Riel List-ID: > test environment: no lvm, copy ext3 to ext3 (not mv), no change swappines= s, > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0CFQ is used, userland is Fedora10, mmo= tm(2.6.30-rc1 + mm patch), > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0CPU opteronx4, mem 4G > > mouse move lag: =A0 =A0 =A0 =A0 =A0 =A0 =A0 not happend > window move lag: =A0 =A0 =A0 =A0 =A0 =A0 =A0not happend > Mapped page decrease rapidly: not happend (I guess, these page stay in > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 =A0active list on my system) > page fault large latency: =A0 =A0 happend (latencytop display >1200ms) > > > Then, I don't doubt vm replacement logic now. > but I need more investigate. > I plan to try following thing today and tommorow. > > =A0- XFS > =A0- LVM > =A0- another io scheduler (thanks Ted, good view point) > =A0- Rik's new patch hm, AS io-scheduler don't make such large latency on my environment. Elladan, Can you try to AS scheduler? (adding boot option "elevator=3Das") -- 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