>
> 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
