runaway intr problems: powerd and/or hw.acpi.cpu.cx_lowest related

[Andriy Gapon]

on 23/08/2010 06:17 Doug Barton said the following:
> I also got another interesting set of data today from a "runaway intr" situation
> that did not involve swi:4. The symptoms were the same as previously, but the
> devices involved were totally different. This may have to do with the fact that
> I switched back to ULE for the testing today, and/or I hadn't set cx_lowest=C3.

Yes, ULE rules.  4BSD usually only makes things better when there is some real
problem and 4BSD masks it due to its design.

> http://people.freebsd.org/~dougb/intr-out-3.txt

So, hm, npviewer.bin eats all the CPU time?
Just google that name and see that you are not alone.
Can't help with that though.

> This was with ULE + USB in the kernel, LAPIC/HPET, cx_lowest=C1, but running
> powerd with the following:
> powerd_flags="-a adaptive -b adaptive -n adaptive"

-- 
Andriy Gapon