Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265152AbTGCLsS (ORCPT ); Thu, 3 Jul 2003 07:48:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265145AbTGCLsS (ORCPT ); Thu, 3 Jul 2003 07:48:18 -0400 Received: from 69-55-72-144.ppp.netsville.net ([69.55.72.144]:678 "EHLO tiny.suse.com") by vger.kernel.org with ESMTP id S265152AbTGCLsR (ORCPT ); Thu, 3 Jul 2003 07:48:17 -0400 Subject: Re: Status of the IO scheduler fixes for 2.4 From: Chris Mason To: Stephan von Krawczynski Cc: marcelo@conectiva.com.br, linux-kernel@vger.kernel.org, alan@lxorguk.ukuu.org.uk, andrea@suse.de, piggin@cyberone.com.au In-Reply-To: <20030703125828.1347879d.skraw@ithnet.com> References: <1057197726.20903.1011.camel@tiny.suse.com> <20030703125828.1347879d.skraw@ithnet.com> Content-Type: text/plain Organization: Message-Id: <1057233714.20899.1014.camel@tiny.suse.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 Date: 03 Jul 2003 08:01:55 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1252 Lines: 27 On Thu, 2003-07-03 at 06:58, Stephan von Krawczynski wrote: > On 02 Jul 2003 22:02:07 -0400 > Chris Mason wrote: > > > [...] > > Nick would like to see a better balance of throughput/fairness, I wimped > > out and went for the userspace toggle instead because I think anything > > else requires pulling in larger changes from 2.5 land. > > I have a short question on that: did you check if there are any drawbacks on > network performance through this? We had a phenomenon here with 2.4.21 with > both samba and simple ftp where network performance dropped to a crawl when > simply entering "sync" on the console. Even simple telnet-sessions seemed to be > affected. As we could not create a reproducable setup I did not talk about this > up to now, but I wonder if anyone else ever checked that out ... It's possible the network programs involved are actually getting stuck in atime updates somewhere. A decoded sysrq-t during one of the stalls would help find the real cause. -chris - 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/