Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262314AbUKBWqY (ORCPT ); Tue, 2 Nov 2004 17:46:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262357AbUKBWoR (ORCPT ); Tue, 2 Nov 2004 17:44:17 -0500 Received: from dfw-gate1.raytheon.com ([199.46.199.230]:58726 "EHLO dfw-gate1.raytheon.com") by vger.kernel.org with ESMTP id S262314AbUKBWgh (ORCPT ); Tue, 2 Nov 2004 17:36:37 -0500 To: Ingo Molnar Cc: Mark_H_Johnson@raytheon.com, Thomas Gleixner , Florian Schmidt , Lee Revell , Paul Davis , LKML , Bill Huey , Adam Heath , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , jackit-devel , Rui Nuno Capela , "K.R. Foley" From: Mark_H_Johnson@raytheon.com Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.6.8 Date: Tue, 2 Nov 2004 16:35:16 -0600 Message-ID: X-MIMETrack: Serialize by Router on RTSHOU-DS01/RTS/Raytheon/US(Release 6.5.2|June 01, 2004) at 11/02/2004 04:35:19 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 Content-Length: 1416 Lines: 37 >Does this also happen if you chrt ksoftirqd to FIFO prio 1? >Does the 'LOC' count increase for both cpus in /proc/interrupts? With -V0.6.9, I got some slightly different symptoms. I did the change chrt change (though I looked up the PID by hand, my attempt to use pidof with 'ksoftirqd/0' did not work). The LOC count did increase on both CPU's during my test (up until I got the deadlock listed below). I also noticed that almost all interrupts were processed by CPU0; should have checked before starting the real time test to see if that was consistent when the system was idle. I was about to send you a message from the test system with that data when the system locked up. The crash sequence was... - boot to single user (uneventful) - telnet 5 (uneventful) - X and top tests (uneventful) - network test started (and did not finish) - 2343 usec latency dumped - 55962 usec latency dumped - 74229 usec latency dumped - 83374 usec latency dumped - deadlock - long string of other BUG messages I tried to Sync & reboot with Alt-SysRq keys at this point and was unable to do so. Hard reset to reboot. Serial console output to follow separately. --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/