linux-kernel - Re: wrong timestamps in ftrace?

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Message-ID: <alpine.DEB.2.00.0903171210510.10274@gandalf.stny.rr.com>
Date:	Tue, 17 Mar 2009 12:11:33 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Miklos Szeredi <miklos@...redi.hu>
cc:	mingo@...e.hu, fweisbec@...il.com, a.p.zijlstra@...llo.nl,
	linux-kernel@...r.kernel.org
Subject: Re: wrong timestamps in ftrace?


On Tue, 17 Mar 2009, Miklos Szeredi wrote:

> On Tue, 17 Mar 2009, Ingo Molnar wrote:
> > * Miklos Szeredi <miklos@...redi.hu> wrote:
> > > 
> > > So according to the timestamps the time difference between the first
> > > and last event was just 0.12s, which is rubbish.
> > > 
> > > This is latest git on a CoreDuo T60 notebook.  Attaching .config and
> > > dmesg.
> > 
> > There's been changes to timestamping in the tracing tree. Could you 
> > check whether latest -tip:
> > 
> >    http://people.redhat.com/mingo/tip.git/README
> > 
> > works better for you?
> 
> Unfortunately no, it's behaving exatly the same.
> 
> # uname -a
> Linux tucsk 2.6.29-rc8-tip-02571-g0fcb24f-dirty #9 SMP PREEMPT Tue Mar 17 16:53:41 CET 2009 x86_64 x86_64 x86_64 GNU/Linux

Yeah, the global clock source is there, but currently we do not have an 
option to enable it. I'm working on a patch now to fix that.

Thanks,

-- Steve

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