PATCH - acpica-20031203
Andy Fawcett
andy at athame.co.uk
Wed Dec 10 02:18:34 PST 2003
On Tuesday 09 December 2003 7:44 pm, Nate Lawson wrote:
> On Tue, 9 Dec 2003, Andy Fawcett wrote:
> > On Monday 08 December 2003 19:47, Nate Lawson wrote:
> > > I've built and run the latest ACPI-CA dist and it looks pretty
> > > good. It has a lot of fixes from FreeBSD as well as Linux.
> > > Please give it a try and let me know if it gives you any new
> > > problems.
> > >
> > > http://www.root.org/~nate/freebsd/acpica-20031203.diff.gz
>
> The about patch has been committed, along with some other related
> changes. Please cvsup to today and test again.
I will do that later, please see below first.
> > I've just installed 5.2-CURRENT (post -BETA branching) to my Asus
> > P2B-DS based system, and I am seeing slow performance. Looking at
> > the output of "ps -axu" I can see massive amounts of Interrupt
> > activity (removed VSZ and RSS fields to save space):
> >
> > USER PID %CPU %MEM TT STAT STARTED TIME COMMAND
> > root 30 95.3 0.0 ?? RL 1:08PM 4:11.77 (irq20: acpi0)
> > root 12 53.9 0.0 ?? RL 1:08PM 5:08.86 (idle: cpu0)
> > root 11 50.0 0.0 ?? RL 1:08PM 4:28.89 (idle: cpu1)
> >
> > # uname -a
> > FreeBSD nobby.int.athame.co.uk 5.2-CURRENT FreeBSD 5.2-CURRENT #2:
> > Mon Dec 8 21:32:07 EET 2003
> > root at nobby.int.athame.co.uk:/usr/obj/usr/ src/sys/NOBBY i386
> >
> > This happens both before and after installing the 20031203
> > patchset.
>
> Since you have this problem after applying the patch, cvsuping
> probably won't help.
Indeed.
> > The box was previously running 5.1R with no apparent problems.
> >
> > From dmesg:
> > acpi0: Overriding SCI Interrupt from IRQ 9 to IRQ 20
> >
> > I've read through as much of the -current archives as possible, but
> > I can't see anything that helps me diagnose the problem.
>
> The issue is likely that you have a broken BIOS.
It's quite possible, the BIOS on this system (while being the latest
available from Asus) is not very recent.
> Before 5.2, we
> didn't use the APIC on non-SMP boxes. Now we use it if it's
> available.
I didn't quite understand this, since my box _is_ SMP...
> Try this in loader.conf to disable APIC irq routing:
>
> hint.apic.0.disabled=1
That has removed the spurious interrupt problem from my system. I'll do
some more experimenting later, and provide some feedback if I find
anything out.
Thanks,
Andy
--
Andy Fawcett | andy at athame.co.uk
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