linux-kernel - Re: AW: clock_nanosleep: cyclic POSIX thread freezes during time setting

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Message-ID: <alpine.LFD.2.00.0910061112400.2646@localhost.localdomain>
Date:	Tue, 6 Oct 2009 11:13:43 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	"Mehlan, Markus" <Markus.Mehlan@...ter.info>
cc:	linux-kernel@...r.kernel.org
Subject: Re: AW: clock_nanosleep: cyclic POSIX thread freezes during time
 setting

On Tue, 6 Oct 2009, Mehlan, Markus wrote:
> > Just tested on a MPC5200 board with cyclictest and setting 
> > date on a second console. Unfortunately I cannot reproduce 
> > that problem. Can you try to activate the function tracer and 
> > capture what the system is doing. That might us give some 
> > clue about the problem.
> > 
> do you mean kernel function trace (KFT patch) with function trace
> or user space "strace"?

The kernel function tracer which is in -rt. strace is not telling us
what's happening in the kernel.

Thanks,

	tglx
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