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

[Jesse Barnes]

On Thu, 16 Sep 2010 18:03:04 +0300
Vasily Khoruzhick <anarsoul at gmail.com> wrote:

> В сообщении от 15 of September 2010 01:41:11 автор Sitsofe Wheeler написал:
> > > >     processor.max_cstate=2
> > > 
> > > Nope, it doesn't work with max_cstate=2
> > 
> > Perhaps intel_idle is being used? Any mention of it in dmesg?
> 
> Sitsofe, maybe you misunderstood me, I mean with max_cstate=1 graphics is 
> smooth, with higher values (i.e. max_cstate=2) graphics is jerky.
> 
> Btw, Jesse, any comments/solutions/workarounds except one with 
> processor.max_cstate=1 in kernel commandline? Should I file a bug on fdo 
> bugzilla?

FDO bug for this is https://bugs.freedesktop.org/show_bug.cgi?id=30364.

I still don't have a root cause, but at least we have a workaround.

-- 
Jesse Barnes, Intel Open Source Technology Center