From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932404AbVHSFRB (ORCPT ); Fri, 19 Aug 2005 01:17:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932555AbVHSFRB (ORCPT ); Fri, 19 Aug 2005 01:17:01 -0400 Received: from pop.gmx.net ([213.165.64.20]:3221 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S932404AbVHSFQ7 (ORCPT ); Fri, 19 Aug 2005 01:16:59 -0400 X-Authenticated: #14349625 Message-Id: <5.2.1.1.2.20050819064426.00c59e68@pop.gmx.net> X-Mailer: QUALCOMM Windows Eudora Version 5.2.1 Date: Fri, 19 Aug 2005 07:16:49 +0200 To: "Davda, Bhavesh P \(Bhavesh\)" From: Mike Galbraith Subject: RE: Debugging kernel semaphore contention and priority inversion Cc: In-Reply-To: <21FFE0795C0F654FAD783094A9AE1DFC0830FE03@cof110avexu4.glob al.avaya.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed X-Antivirus: avast! (VPS 0532-0, 08/08/2005), Outbound message X-Antivirus-Status: Clean X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At 08:50 AM 8/18/2005 -0600, Davda, Bhavesh P \(Bhavesh\) wrote: > > > Sounds like there must be another player who is RT prio + spinning. > >Very good! Yes, I left out that piece of detail in my original posting. >There is a real low priority (4) SCHED_FIFO (hence still higher than any >SCHED_OTHER) task spinning. That's a (fairly) deadly bug. -Mike