Hi, > The hw.setperf sysctl is for CPUs that support running at various > speeds through mechanisms such as Intel's SpeedStep (such as the > Pentium M). I wonder whether AMD's Cool 'n Quiet feature works > similarly; haven't tested it yet. > > Unless I'm badly mistaken, Pentium 3 chips do not support such a > feature, making it rather useless to return a value (or set one, for > that matter). Feel free to enlighten me if I'm wrong.
The Pentium 3 mobile supports Intel's SpeedStep and the Ultra-Low-Voltage-Version supports the Enhanced Intel SpeedStep Technology. My BIOS has some switches to configure various basic options, but afaik the dynamic cpu scaling is part of the OS. > > How about the snapshot-version? > > On a different note, you may want to try APM (or its counterpart ACPI > that is currently being worked on). If your CPU doesn't support > slowing down, I suppose you're out of luck. I'm still using apm and for example suspend works very well. But I also want to use cpu throttling. And as far as I know I had to use hw.setperf for that. Or correct me if I'm wrong. bossk
