From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261583AbULIU4a (ORCPT ); Thu, 9 Dec 2004 15:56:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261617AbULIU4a (ORCPT ); Thu, 9 Dec 2004 15:56:30 -0500 Received: from dfw-gate4.raytheon.com ([199.46.199.233]:53964 "EHLO dfw-gate4.raytheon.com") by vger.kernel.org with ESMTP id S261583AbULIU4G (ORCPT ); Thu, 9 Dec 2004 15:56:06 -0500 Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.32-6 To: Ingo Molnar Cc: Amit Shah , Karsten Wiese , Bill Huey , Adam Heath , emann@mrv.com, Gunther Persoons , "K.R. Foley" , linux-kernel@vger.kernel.org, Florian Schmidt , Fernando Pablo Lopez-Lezcano , Lee Revell , Rui Nuno Capela , Shane Shrybman , Esben Nielsen , Thomas Gleixner , Michal Schmidt X-Mailer: Lotus Notes Release 5.0.8 June 18, 2001 Message-ID: From: Mark_H_Johnson@raytheon.com Date: Thu, 9 Dec 2004 14:49:50 -0600 X-MIMETrack: Serialize by Router on RTSHOU-DS01/RTS/Raytheon/US(Release 6.5.2|June 01, 2004) at 12/09/2004 02:49:52 PM MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII X-SPAM: 0.00 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >well, i think this measurement issue needs resolving before jumping to >any generic conclusions. Not a single trace is extremely suspect. The >userspace timestamps are rdtsc based, or gettimeofday() based? rdtsc. Its actually code you sent me a while ago :-) when you suspected a measurement problem before. --Mark H Johnson