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

[Andrew Lutomirski]

On Wed, Dec 8, 2010 at 1:14 PM, Vasily Khoruzhick <anarsoul at gmail.com> wrote:
> On Wednesday 08 December 2010 19:54:59 Andrew Lutomirski wrote:
>> On Wed, Dec 8, 2010 at 12:00 PM, Vasily Khoruzhick <anarsoul at gmail.com>
> wrote:
>> > On Wednesday 08 December 2010 18:54:21 Chris Wilson wrote:
>> >> On Wed, 8 Dec 2010 18:44:41 +0200, Vasily Khoruzhick
>> >> <anarsoul at 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.
>>
>> Do you have the 2.6.36.2 candidate patch that fixes pm_qos in?  From
>> the description, it looks like pm_qos doesn't work at all without it.
>
> Nope, where I can get this patch?

http://www.spinics.net/lists/kernel/msg1120988.html

I'd test but I don't think my system is affected.  :)

--Andy