Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261332AbUK0HSf (ORCPT ); Sat, 27 Nov 2004 02:18:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261288AbUK0HHl (ORCPT ); Sat, 27 Nov 2004 02:07:41 -0500 Received: from zeus.kernel.org ([204.152.189.113]:32190 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id S261353AbUKZTHj (ORCPT ); Fri, 26 Nov 2004 14:07:39 -0500 Message-ID: <26206.195.245.190.94.1101379631.squirrel@195.245.190.94> In-Reply-To: <20041125114458.GA20831@elte.hu> References: <20041117124234.GA25956@elte.hu> <20041118123521.GA29091@elte.hu> <20041118164612.GA17040@elte.hu> <20041122005411.GA19363@elte.hu> <20041123175823.GA8803@elte.hu> <20041124101626.GA31788@elte.hu> <20041124112745.GA3294@elte.hu> <21889.195.245.190.93.1101377024.squirrel@195.245.190.93> <20041125111344.GA17786@elte.hu> <4798.195.245.190.93.1101379116.squirrel@195.245.190.93> <20041125114458.GA20831@elte.hu> Date: Thu, 25 Nov 2004 10:47:11 -0000 (WET) Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-0 From: "Rui Nuno Capela" To: "Ingo Molnar" Cc: linux-kernel@vger.kernel.org, "Lee Revell" , mark_h_johnson@raytheon.com, "K.R. Foley" , "Bill Huey" , "Adam Heath" , "Florian Schmidt" , "Thomas Gleixner" , "Michal Schmidt" , "Fernando Pablo Lopez-Lezcano" , "Karsten Wiese" , "Gunther Persoons" , emann@mrv.com, "Shane Shrybman" , "Amit Shah" , "Esben Nielsen" User-Agent: SquirrelMail/1.4.3a X-Mailer: SquirrelMail/1.4.3a MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-OriginalArrivalTime: 25 Nov 2004 10:48:07.0180 (UTC) FILETIME=[3F6A84C0:01C4D2DC] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1035 Lines: 34 Ingo Molnar > > * Rui Nuno Capela wrote: > >> > how hard of a freeze is it? I.e. if you log in over the text console, >> > and do: >> > >> > chrt -f 99 -p `pidof 'IRQ 1'` >> > chrt -f 99 -p $$ >> > >> > can you access the sysrq keys after the freeze happens? >> >> The lockup is pretty hard indeed. Complete lockup. No sysrq, not even >> any output thru serial console. The only action that has some visible >> effect is turning the power/reset switch off :) > > note that unless you try the above, or the debug_direct_keyboard switch, > 'soft' lockups will have the same symptoms: no sysrq, no serial console, > an apparently hung system. So unless you've done the equivalent already, > please try my suggestions. > > Ingo > Yes Master :) -- rncbc aka Rui Nuno Capela rncbc@rncbc.org - 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/