Yeah, the cpufreq utils show all the relevant information. I use the acpi-cpufreq driver and when I didn't use it nothing happened. cpufreq-aperf shows each CPU at 1.2GHz. I'll look at the EIST in BIOS, too. Thanks for the pointers.

Here's an interesting item:

12:41:00# cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit
1199000

which sort of jives with the "asserted by call to hardware" in the cpufreq-info section:
analyzing CPU 3:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1 2 3
  CPUs which need to have their frequency coordinated by software: 3
  maximum transition latency: 10.0 us.
  hardware limits: 1.20 GHz - 2.67 GHz
  available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz
  available cpufreq governors: conservative, ondemand, userspace, powersave, performance
  current policy: frequency should be within 1.20 GHz and 1.20 GHz.
                  The governor "performance" may decide which speed to use
                  within this range.
  current CPU frequency is 1.20 GHz (asserted by call to hardware).
  cpufreq stats: 2.67 GHz:0.25%, 2.67 GHz:0.01%, 2.53 GHz:0.01%, 2.40 GHz:0.01%, 2.27 GHz:0.01%, 2.13 GHz:0.01%, 2.00 GHz:0.01%, 1.87 GHz:0.01%, 1.73 GHz:0.01%, 1.60 GHz:0.01%, 1.47 GHz:0.01%, 1.33 GHz:0.01%, 1.20 GHz:99.61%  (28)

So, why are there micro-spikes of higher frequencies in the above stats? The stats section says there are only five transitions.


--
Bill Longman