From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265398AbTLSADF (ORCPT ); Thu, 18 Dec 2003 19:03:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265400AbTLSADF (ORCPT ); Thu, 18 Dec 2003 19:03:05 -0500 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:11226 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S265398AbTLSADD (ORCPT ); Thu, 18 Dec 2003 19:03:03 -0500 Date: Fri, 19 Dec 2003 01:03:07 +0100 From: Andrea Arcangeli To: Andrew Theurer Cc: Joe Pranevich , linux-kernel@vger.kernel.org Subject: Re: Wonderful World of Linux 2.6 - Final Message-ID: <20031219000307.GE10250@dualathlon.random> References: <1071724386.2820.12.camel@localhost.localdomain> <200312180929.46723.habanero@us.ibm.com> <20031218235211.GD10250@dualathlon.random> <200312181758.55059.habanero@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200312181758.55059.habanero@us.ibm.com> User-Agent: Mutt/1.4.1i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 18, 2003 at 05:58:55PM -0600, Andrew Theurer wrote: > On Thursday 18 December 2003 17:52, Andrea Arcangeli wrote: > > On Thu, Dec 18, 2003 at 09:29:46AM -0600, Andrew Theurer wrote: > > > be scheduled optimally, for example, a kernel compile with -j4 on a 4-way > > > P4, with and without HT: > > > > > > average of 10 kernel compiles with -j4 on 2.6.0-test9: > > > > > > HT disabled: Elapsed: 145.086s User: 513.808s System: 44.724s CPU: 384.5% > > > HT enabled: Elapsed: 172.463s User: 633.856s System: 48.003s CPU: 394.8% > > > > is that 4-way a 4-logical-way or 4-physical-way? If it's a 4-logical > > way, this workload is much closer to the best case than the worst case. > > I'm guessing a simple -j2 or -j3 should do much worse than that. > > This is 4-way physical/4-way logical (no HT) vs 4-way physical/8-way logical > (with HT) ok then it was closer to the worst case ;)