[Intel-gfx] Interrupt latency on some 945GM platforms

[Vasily Khoruzhick]

В сообщении от 14 of September 2010 00:59:52 автор Jesse Barnes написал:
> On Tue, 14 Sep 2010 00:52:31 +0300
> 
> Vasily Khoruzhick <anarsoul at gmail.com> wrote:
> > В сообщении от 14 of September 2010 00:46:32 автор Jesse Barnes написал:
> > > Yes, you can set vblank_mode=0 in your environment or drirc.  At least
> > > I think 0 is no vsync. :)
> > 
> > That doesn't help, glxgears shows ~1000fps, but it's output is jerky.
> 
> Is it smooth with clocksource=tsc?  I wonder if the GPU batch
> interrupts are also getting delayed, and possibly timer ticks...


Yes, it's smooth with clocksource=tsc nohz=off

Regards
Vasily
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