Compiling 6.3->7: lapic frequency madness
oberman at es.net
Tue Mar 18 14:47:51 PDT 2008
> Date: Tue, 18 Mar 2008 13:24:33 -0700
> From: Sam Leffler <sam at freebsd.org>
> Sender: owner-freebsd-current at freebsd.org
> Igor Mozolevsky wrote:
> > On 18/03/2008, John Baldwin <jhb at freebsd.org> wrote:
> >> On Tuesday 18 March 2008 11:49:29 am Igor Mozolevsky wrote:
> >> > On 18/03/2008, John Baldwin <jhb at freebsd.org> wrote:
> >> >
> >> > > First, which one is broken? Have you tried a RELENG_7_0 kernel and does
> >> it do
> >> > > the same as a release CD kernel?
> >> >
> >> > Tried both ISO image and RELENG_7_0, they both work ok, but RELENG_7
> >> doesn't...
> >> Ok, and it is cpufreq related? Which cpufreq drivers are attaching to your
> >> CPU?
> > Well, I wouldn't say I'm sure it's 100% cpufreq related, but removing
> > it from the kernel fixes the problem... It's also possible that
> > cpufreq is interfering with something else... Anyhow, I've got both
> > est and p4tcc attaching.
> I'm having lots of problems with cpu freq throttling on t4x laptops.
> The system gets very sluggish and when I check the frequency it's been
> throttled down. This happens even on ac (haven't checked what powerd is
> doing then).
As I have reported, cpufreq does not play well with the T43.
I saw the same thing you saw. Pulled cpufreq from my kernel and it's
working fine without it. This includes powerd doing its thing and a
normal list of speed/energy values from 'sysctl dev.cpu.0'.
dev.cpu.0.freq_levels: 2000/27000 1750/23625 1600/22600 1400/19775
1333/19666 1166/17207 1066/16733 932/14641 800/13800 700/12075 600/10350
500/8625 400/6900 300/5175 200/3450 100/1725
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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