From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262344AbTLUJO7 (ORCPT ); Sun, 21 Dec 2003 04:14:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262356AbTLUJO7 (ORCPT ); Sun, 21 Dec 2003 04:14:59 -0500 Received: from mx2.elte.hu ([157.181.151.9]:30922 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262344AbTLUJO6 (ORCPT ); Sun, 21 Dec 2003 04:14:58 -0500 Date: Sun, 21 Dec 2003 09:57:16 +0100 From: Ingo Molnar To: Christian Meder Cc: linux-kernel@vger.kernel.org Subject: Re: 2.6 vs 2.4 regression when running gnomemeeting Message-ID: <20031221085716.GA21322@elte.hu> References: <200312201355.08116.kernel@kolivas.org> <1071891168.1044.256.camel@localhost> <3FE3C6FC.7050401@cyberone.com.au> <1071893802.1363.21.camel@localhost> <3FE3D0CB.603@cyberone.com.au> <1071897314.1363.43.camel@localhost> <20031220111917.GA18267@elte.hu> <1071938978.1025.48.camel@localhost> <20031220174232.GA29189@elte.hu> <1071970825.1025.87.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1071970825.1025.87.camel@localhost> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: SpamAssassin ELTE 1.0 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Christian Meder wrote: > I tried to verify your suggestion and found that the P_RTEMS symbol is > not defined on Linux. It seems to be some other kind of realtime > operating system. So the code in question already uses usleep. Now I'm > still digging for other occurances of sched_yield in the pwlib > sources. could you try to strace -f gnomemeeting? Maybe there's no sched_yield() at all. Could you also try to run the non-yielding loop code via: nice -19 ./loop & do a couple of such loops still degrade gnomemeeting? Ingo