From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753121AbXLEQaT (ORCPT ); Wed, 5 Dec 2007 11:30:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751556AbXLEQaH (ORCPT ); Wed, 5 Dec 2007 11:30:07 -0500 Received: from gw1.cosmosbay.com ([86.65.150.130]:39909 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751309AbXLEQaG (ORCPT ); Wed, 5 Dec 2007 11:30:06 -0500 Message-ID: <4756D1F1.9030200@cosmosbay.com> Date: Wed, 05 Dec 2007 17:29:37 +0100 From: Eric Dumazet User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: Ingo Molnar CC: Jie Chen , Simon Holm Th??gersen , linux-kernel@vger.kernel.org, Peter Zijlstra Subject: Re: Possible bug from kernel 2.6.22 and above, 2.6.24-rc4 References: <4744966C.900@jlab.org> <4744ADA9.7040905@cosmosbay.com> <4744E0DC.7050808@jlab.org> <1195698770.11808.4.camel@odie.local> <4744F042.4070002@jlab.org> <20071204131707.GA4232@elte.hu> <4756C3D9.9030107@jlab.org> <20071205154014.GA6491@elte.hu> <4756CEEE.9050908@cosmosbay.com> <20071205162512.GA17994@elte.hu> In-Reply-To: <20071205162512.GA17994@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [86.65.150.130]); Wed, 05 Dec 2007 17:29:43 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ingo Molnar a écrit : > * Eric Dumazet wrote: > >> $ gcc -O2 -o burner burner.c >> $ ./burner >> Time to perform the unit of work on one thread is 0.040328 s >> Time to perform the unit of work on 2 threads is 0.040221 s > > ok, but this actually suggests that scheduling is fine for this, > correct? > > Ingo > > Yes, But this machine runs an old kernel. I was just giving you how to run it :)