Re: Interrupt latency on some 945GM platforms

Thomas Gleixner
2010-09-16T18:50:50Z

[-- Attachment #1: Type: TEXT/PLAIN, Size: 892 bytes --]

On Thu, 16 Sep 2010, Vasily Khoruzhick wrote:

> В сообщении от 16 of September 2010 21:30:58 автор Vasily Khoruzhick написал:
> > В сообщении от 16 of September 2010 21:07:39 автор Thomas Gleixner написал:
> > > > Btw, Jesse, any comments/solutions/workarounds except one with
> > > > processor.max_cstate=1 in kernel commandline? Should I file a bug on
> > > > fdo bugzilla?
> > >
> > > we fixed a HPET related bug a few days ago, which might be the cause
> > > for your problem as well.
> >
> > Nope, it doesn't help :(
>
> Btw, I suspect hpet is not related, I disabled hpet completely in kernel
> config but issue is still here (clocksource is acpi_pm)

Ok. The problematic part of HPET was not the clocksource, it was the
clock event device which failed to deliver interrupts occasionally. It
was worth a try at least.

Thanks,

tglx