linux-kernel - Re: printk timestamps jumping back and forth in 2.6.25-rc.

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Date:	Tue, 4 Mar 2008 13:44:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Alexey Zaytsev <alexey.zaytsev@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	lkml <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: printk timestamps jumping back and forth in 2.6.25-rc.


* Alexey Zaytsev <alexey.zaytsev@...il.com> wrote:

> On Mon, Mar 3, 2008 at 1:45 PM, Ingo Molnar <mingo@...e.hu> wrote:
> >
> >  * Alexey Zaytsev <alexey.zaytsev@...il.com> wrote:
> >
> >
> > > >  I"ll now recompile with fair group scheduler disabled, just to be
> >  > >  sure.
> >  >
> >  > Yes, with the group scheduler disabled, the latencies for both Xorg
> >  > and gnome-terminal do net exceed 15 ms. And the mouse is also smooth.
> >
> >  could you also try the current scheduler fixes lineup in
> >  sched-devel.git:
> >
> >    http://people.redhat.com/mingo/sched-devel.git/README
> >
> >  is the mouse smooth with the group scheduler _enabled_ too?
> >
> 
> Works fine. The latencies of both Xorg and gnome-terminal are reported 
> to be about 5-20 ms, and the mouse is smooth too.

great - if you dont mind i'll add your:

  Tested-by: Alexey Zaytsev <alexey.zaytsev@...il.com>

	Ingo
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