From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760105AbZD1IDi (ORCPT ); Tue, 28 Apr 2009 04:03:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758272AbZD1IDR (ORCPT ); Tue, 28 Apr 2009 04:03:17 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:51960 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755306AbZD1IDM (ORCPT ); Tue, 28 Apr 2009 04:03:12 -0400 From: KOSAKI Motohiro To: Peter Zijlstra Subject: Re: Swappiness vs. mmap() and interactive response Cc: kosaki.motohiro@jp.fujitsu.com, Elladan , linux-kernel@vger.kernel.org, linux-mm , Rik van Riel In-Reply-To: <1240904919.7620.73.camel@twins> References: <20090428143019.EBBF.A69D9226@jp.fujitsu.com> <1240904919.7620.73.camel@twins> Message-Id: <20090428170214.EBD8.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50 [ja] Date: Tue, 28 Apr 2009 17:03:09 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > 1. please post your /proc/meminfo > > 2. Do above copy make tons swap-out? IOW your disk read much faster than write? > > 3. cache limitation of memcgroup solve this problem? > > 4. Which disk have your /bin and /usr/bin? > > > > FWIW I fundamentally object to 3 as being a solution. Yes, I also think so. > I still think the idea of read-ahead driven drop-behind is a good one, > alas last time we brought that up people thought differently. hmm. sorry, I can't recall this patch. do you have any pointer or url? From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with SMTP id 752956B003D for ; Tue, 28 Apr 2009 04:03:10 -0400 (EDT) Received: from m2.gw.fujitsu.co.jp ([10.0.50.72]) by fgwmail5.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id n3S83AIH014137 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Tue, 28 Apr 2009 17:03:11 +0900 Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id ADCEB45DD79 for ; Tue, 28 Apr 2009 17:03:10 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 8C37C45DE51 for ; Tue, 28 Apr 2009 17:03:10 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 7302C1DB803C for ; Tue, 28 Apr 2009 17:03:10 +0900 (JST) Received: from ml13.s.css.fujitsu.com (ml13.s.css.fujitsu.com [10.249.87.103]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 271281DB803B for ; Tue, 28 Apr 2009 17:03:10 +0900 (JST) From: KOSAKI Motohiro Subject: Re: Swappiness vs. mmap() and interactive response In-Reply-To: <1240904919.7620.73.camel@twins> References: <20090428143019.EBBF.A69D9226@jp.fujitsu.com> <1240904919.7620.73.camel@twins> Message-Id: <20090428170214.EBD8.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Tue, 28 Apr 2009 17:03:09 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Peter Zijlstra Cc: kosaki.motohiro@jp.fujitsu.com, Elladan , linux-kernel@vger.kernel.org, linux-mm , Rik van Riel List-ID: > > 1. please post your /proc/meminfo > > 2. Do above copy make tons swap-out? IOW your disk read much faster than write? > > 3. cache limitation of memcgroup solve this problem? > > 4. Which disk have your /bin and /usr/bin? > > > > FWIW I fundamentally object to 3 as being a solution. Yes, I also think so. > I still think the idea of read-ahead driven drop-behind is a good one, > alas last time we brought that up people thought differently. hmm. sorry, I can't recall this patch. do you have any pointer or url? -- 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