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SubjectRe: [3.9-rc1] very poor interrupt responses
Date
On Monday, March 11, 2013 11:09:33 AM Harald Arnesen wrote:
> Rafael J. Wysocki [2013-03-11 04:38]:
>
> > On Friday, March 08, 2013 02:12:33 PM Shawn Starr wrote:
> >> Hello folks,
> >>
> >> I am noticing since rc0 and now rc1, very poor interrupt handling. Keyboard response, mouse movements, display refreshing etc. General input/display sluggishness. Did something break IRQ handling somewhere? I need to validate if this happens with X not running also if it is i915 related somehow. The behavor is noticed in a console login however.
> >
> > Please try to disable the intel_pstate driver by putting intel_pstate=disable
> > into the kernel's command line and see if that helps (you may also try to
> > compile the driver out).
>
> I see the same problem on my Thinkpad T500, and I have
> X86_INTEL_PSTATE=n in my config.

Can you please open a Bugzilla entry at bugzilla.kernel.org and attach
the output of lspci -vvv, the contents of /proc/interrupts and
a boot dmesg log from the affected machine to it? Ideally, both from a kernel
that doesn't have the problem and from the affected one.

Thanks,
Rafael


--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.


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