Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 6 Aug 2002 16:10:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 6 Aug 2002 16:10:38 -0400 Received: from e1.ny.us.ibm.com ([32.97.182.101]:25012 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id ; Tue, 6 Aug 2002 16:10:38 -0400 Subject: Re: Linux v2.4.19-rc5 To: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net Cc: Jens Axboe X-Mailer: Lotus Notes Release 5.0.8 June 18, 2001 Message-ID: From: "Peter Wong" Date: Tue, 6 Aug 2002 15:12:51 -0500 X-MIMETrack: Serialize by Router on D01ML072/01/M/IBM(Release 5.0.10 SPR# MIAS5B3GZN |June 28, 2002) at 08/06/2002 04:13:00 PM MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1205 Lines: 38 >On Tue, Aug 06 2002, Adrian Bunk wrote: > > On Tue, 6 Aug 2002, Jens Axboe wrote: > > > > >... > > > try a work load that excercises the block i/o layer alone (O_DIRECT, > > > raw, whatnot) and then compare 2.4 and 2.5. ibm had some slides on this > > > from ols, unfortunately I don't know if they have then online. > >... > > > > Pages 390-406 in > > > > http://www.linux.org.uk/~ajh/ols2002_proceedings.pdf.gz > > > > or are you talking about something different? > Right thanks, exactly those. Table 3 on page 395 is the one I noted. > Forget readv, as that hasn't been done in 2.5 yet. I'd say a 2.5.17 > untweaked kernel beating 2.4 tweaked beyond recognition isn't too shabby > for a devel series kernel. The corresponding presentation in the sdd format is available at http://www-124.ibm.com/developerworks/opensource/linuxperf/. Regards, Peter Peter Wai Yee Wong IBM Linux Technology Center, Performance Analysis email: wpeter@us.ibm.com - 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/