Re: top(1) + vmstat(8): CPU percentages broken

From: Attilio Rao <attilio_at_freebsd.org>
Date: Mon, 25 Jan 2010 17:58:11 +0100
2010/1/25 Oliver Fromme <olli_at_lurza.secnetix.de>:
> Attilio Rao wrote:
>  > 2010/1/25 Oliver Fromme <olli_at_lurza.secnetix.de>:
>  > > [...]
>  > >  > May you revert r202387, 202441 and 202534 and see if it does make a difference?
>  > >
>  > > Yes, reverting those fixes the problem.  The CPU statistics
>  > > are back to normal.
>  >
>  > With the latest current, may you please provide a verbose dmesg?
>  > May you also provide a %sysctl kern.timecounter?
>
> Is a current of last week (2010-01-18) sufficient?  I haven't
> seen any commits to the clock subsystem in the meantime, so
> it should be sufficient.  Verbose dmesg, sysctl and much more
> can be found here:

Thanks a lot for the report.
I see this:
RTC BIOS diagnostic error 80<clock_battery>

which means basically atrtc has been disabled and thus profhz and
stathz fellback. The other traces I got are someway similar (I see
values of hz which go in this direction).
What needs to happen is that, if atrtc is not available apic should be
choosen actually.
I will try to make a patch very soon.

Attilio


-- 
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Received on Mon Jan 25 2010 - 15:58:12 UTC

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