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From: Mike Galbraith <efault@gmx.de>
To: Darren Hart <dvhltc@us.ibm.com>
Cc: Lee Revell <rlrevell@joe-job.com>,
	lkml <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
	Thomas Gleixner <tglx@linutronix.de>,
	Steven Rostedt <rostedt@goodmis.org>,
	Florian Schmidt <mista.tapas@gmx.net>
Subject: Re: rt20 scheduling latency testcase and failure data
Date: Sun, 14 May 2006 09:38:42 +0200	[thread overview]
Message-ID: <1147592323.7564.23.camel@homer> (raw)
In-Reply-To: <200605140004.30307.dvhltc@us.ibm.com>

On Sun, 2006-05-14 at 00:04 -0700, Darren Hart wrote:
> > > > On Saturday 13 May 2006 11:21, Lee Revell wrote:
> > > If you disable printf + fflush in iterations loop, problem goes away?
> 
> Unfortunately not, after disabling the printf and fflush, my very first run 
> resulted in:

Drat.

> What is it about this dump that made you suspect the printf?  Or was it just 
> that printing the trace seemed to trigger a failure - so it seemed reasonable 
> that the process may have been blocked on writing to the console?

Yeah, realtime task in D state.

	-Mike


  reply	other threads:[~2006-05-14  7:38 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-13  2:24 rt20 scheduling latency testcase and failure data Darren Hart
2006-05-13  9:20 ` Florian Paul Schmidt
2006-05-13 11:55   ` Mike Galbraith
2006-05-13 15:39     ` Steven Rostedt
2006-05-13 16:36       ` Mike Galbraith
2006-05-15  8:04       ` Ingo Molnar
2006-05-13 18:06   ` Darren Hart
2006-05-13 18:21     ` Lee Revell
2006-05-13 23:01       ` Darren Hart
2006-05-14  3:46         ` Mike Galbraith
2006-05-14  5:48           ` Mike Galbraith
2006-05-14  7:04             ` Darren Hart
2006-05-14  7:38               ` Mike Galbraith [this message]
2006-05-15  8:13         ` Ingo Molnar
2006-05-16  1:30           ` Darren Hart
2006-05-16  7:22             ` Sébastien Dugué
2006-05-18  9:14               ` Darren Hart
2006-05-18 11:24                 ` Ingo Molnar
2006-05-18  8:44             ` Sébastien Dugué
2006-05-18  8:47               ` Ingo Molnar
2006-05-18  8:58                 ` Sébastien Dugué
2006-05-18  8:56                   ` Ingo Molnar
2006-05-18  9:18                     ` Sébastien Dugué
2006-05-18  9:38                   ` Darren Hart
2006-05-18  9:58                     ` Sébastien Dugué
2006-05-19  5:48                     ` Mike Galbraith
2006-05-19  5:58                       ` Mike Galbraith
2006-05-15  5:43     ` Mike Galbraith
2006-05-15 16:52       ` Lee Revell
2006-05-15 11:20     ` Sébastien Dugué
2006-05-15 21:49       ` Darren Hart
2006-05-15 11:15 ` Sébastien Dugué
2006-05-15 14:34   ` Darren Hart

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