Re: [PATCH] drm/i915: Use PM QoS to prevent C-state memory starvation of the GPU

Vasily Khoruzhick
2010-12-08T17:00:59Z

On Wednesday 08 December 2010 18:54:21 Chris Wilson wrote:
> On Wed, 8 Dec 2010 18:44:41 +0200, Vasily Khoruzhick <anarsoul@gmail.com>
wrote:
> > On Wednesday 08 December 2010 18:24:35 Chris Wilson wrote:
> > > This is just a preliminary attempt to see if this even helps. Obviously
> > > some more effort will need to be spent investigating a better choice of
> > > latency and when we need to request it, but first: does this help?
> >
> > Sorry, but it does not. glxgears is still jerky.
>
> I thought we were trying to fix the reported framerate?

Yep, it reports 20-30 instead of 60

> Try adjusting the
> request max latency down from 20 to 1, or even 0.

Will try.

Regards
Vasily