Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933793AbXEVK6Q (ORCPT ); Tue, 22 May 2007 06:58:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758482AbXEVK6E (ORCPT ); Tue, 22 May 2007 06:58:04 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:37434 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757659AbXEVK6D (ORCPT ); Tue, 22 May 2007 06:58:03 -0400 Date: Tue, 22 May 2007 12:57:10 +0200 From: Ingo Molnar To: Con Kolivas Cc: Antonino Ingargiola , Nick Piggin , Ray Lee , ck list , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm: swap prefetch improvements Message-ID: <20070522105710.GA12833@elte.hu> References: <20070430162007.ad46e153.akpm@linux-foundation.org> <200705222037.54741.kernel@kolivas.org> <20070522104648.GA10622@elte.hu> <200705222054.46488.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200705222054.46488.kernel@kolivas.org> User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 862 Lines: 22 * Con Kolivas wrote: > On Tuesday 22 May 2007 20:46, Ingo Molnar wrote: > > It clearly should not consider 'itself' as IO activity. This > > suggests some bug in the 'detect activity' mechanism, agreed? I'm > > wondering whether you are seeing the same problem, or is all > > swap-prefetch IO on your system continuous until it's done [or some > > other IO comes inbetween]? > > When nothing else is happening anywhere on the system it reads in > bursts and goes to sleep during journal writeout. hm, what do you call 'journal writeout' here that would be happening on my system? Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/