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SubjectRe: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses)
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On Thursday, March 14, 2013 05:09:59 PM Jiri Kosina wrote:
> On Thu, 14 Mar 2013, Jiri Kosina wrote:
>
> > > > I don't think I have seen this message on rc1+ (8343bce, to be precise),
> > > > but I have definitely seen sluggish system response on that kernel as
> > > > well.
> > > >
> > > > Attaching lspci, /proc/interrupts and dmesg.
> > >
> > > Can you try to do a git bisect for this? Is the sluggish system
> > > response clear enough that you can tell reliably when it is present and
> > > when it isn't?
> >
> > That was my first thought, but unfortunately I am afraid there will be
> > point at which I will easily make a bisection mistake, as the
> > responsiveness of the system varies over time, so it's not really a
> > 100% objective measure.
>
> So I will try a bisect, but it'll take some time so that I could claim it
> to be trustworthy.
>
> Therefore in case anyone has any idea in parallel, I am all ears.

This one is a candidate to focus on I think:

commit 181380b702eee1a9aca51354d7b87c7b08541fcf
Author: Yinghai Lu <yinghai@kernel.org>
Date: Sat Feb 16 11:58:34 2013 -0700

PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers

Thanks,
Rafael


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


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