Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261941AbUKJOUd (ORCPT ); Wed, 10 Nov 2004 09:20:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261985AbUKJOR0 (ORCPT ); Wed, 10 Nov 2004 09:17:26 -0500 Received: from dfw-gate2.raytheon.com ([199.46.199.231]:71 "EHLO dfw-gate2.raytheon.com") by vger.kernel.org with ESMTP id S261893AbUKJONg (ORCPT ); Wed, 10 Nov 2004 09:13:36 -0500 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 , Thomas Gleixner , Michal Schmidt From: Mark_H_Johnson@raytheon.com Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.23 Date: Wed, 10 Nov 2004 08:12:22 -0600 Message-ID: X-MIMETrack: Serialize by Router on RTSHOU-DS01/RTS/Raytheon/US(Release 6.5.2|June 01, 2004) at 11/10/2004 08:12:28 AM 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 Content-Length: 716 Lines: 18 >* Mark_H_Johnson@raytheon.com wrote: > >> [3] I am not so sure that the latency tracing works. I do not get any >> trace output, even if I set preempt_max_latency to zero. > >What is the value of preempt_thresh? It was zero at boot time. Now that I check, set it somewhere to 200. Setting it back to zero, I now see that I have some extremely small reports, max so far is 63 usec. Will run my big test again to see what turns up. --Mark - 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/