Odd power management on ThinkPad T43

[Kevin Oberman]

I'm running current on an IBM ThinkPad T43 and I'm not sure I have a problem, 
but something odd seems to be going on.

I have a 2.0 GHz Pentium-M which I believe is 760. I believe it's one IBM has 
not released information on the EST specs.

If I do NOT have cpufreq loaded, I see:
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

If I load cpufreq I see:
dev.cpu.0.freq_levels: 1500/-1 1312/-1 1200/-1 1050/-1 1000/-1 875/-1 800/-1 
700/-1 600/-1 525/-1 450/-1 375/-1 300/-1 225/-1 150/-1 75/-1

With cpufreq I report perf0, est0 and p4tcc0 in dmesg. Without loading cpufreq 
I still see acpi_perf0 and acpi_throttle0.

This would lead me to believe that without cpufreq I am only seeing 
throttling, but I see my clock speed decrease (x86info) which I did not expect 
to see with pure throttling.

Am I better off when on battery to use cpufreq or not? Is there something to 
tweak to get full 2GHz performance with EST?
-- 
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
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