patch: p4tcc and speedstep cpufreq drivers

Nate Lawson nate at
Wed Feb 23 11:23:53 PST 2005

Frank Mayhar wrote:
> Since I'm banging on my laptop today anyway, I thought I would add
> a datapoint to the observations.  My system is a P4 2.8GHz with
> hyperthreading enabled.  I've enclosed the interesting bits of the dmesg
> and of the sysctl info; if you want/need any more, please let me know.

Please test the committed version of p4tcc.  Just load acpi_perf.ko and 
cpufreq.ko on boot and see how changing the settings for dev.cpu.0.freq 
affects performance.


More information about the freebsd-acpi mailing list