Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755019AbXHUIRk (ORCPT ); Tue, 21 Aug 2007 04:17:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751101AbXHUIRa (ORCPT ); Tue, 21 Aug 2007 04:17:30 -0400 Received: from mtagate3.uk.ibm.com ([195.212.29.136]:42128 "EHLO mtagate3.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751175AbXHUIR3 (ORCPT ); Tue, 21 Aug 2007 04:17:29 -0400 From: Christian Borntraeger To: Ingo Molnar Subject: Re: [accounting regression since rc1] scheduler updates Date: Tue, 21 Aug 2007 10:17:02 +0200 User-Agent: KMail/1.9.7 Cc: Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, Martin Schwidefsky , Jan Glauber , heiko.carstens@de.ibm.com, Paul Mackerras References: <20070812163225.GA11996@elte.hu> <200708141037.48001.borntraeger@de.ibm.com> <20070820154529.GA300@elte.hu> In-Reply-To: <20070820154529.GA300@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708211017.02998.borntraeger@de.ibm.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 800 Lines: 18 Am Montag, 20. August 2007 schrieb Ingo Molnar: > could you send that precise sched_clock() patch? It should be an order > of magnitude simpler than the high-precision stime/utime tracking you > already do, and it's needed for quality scheduling anyway. I have a question about that. I just played with sched_clock, and even when I intentionally slow down sched_clock by a factor of 2, my cpu bound process gets 100 % in top. If this is intentional, I dont understand how a virtualized sched_clock would fix the accounting change? Thanks Christian - 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/