NAME
powernow —
AMD PowerNow! and
Cool'n'Quiet
SYNOPSIS
powernow0 at cpu0
DESCRIPTION
Thepowernow driver supports AMD
“PowerNow!” and “Cool'n'Quiet” CPU frequency
scaling technologies. The following
sysctl(8) variables are available with
powernow:
machdep.powernow.frequency.target- The target frequency of the CPUs.
machdep.powernow.frequency.current- The current frequency.
machdep.powernow.frequency.available- The available frequencies.
Note, however, that these variables are not guaranteed to exist in the future versions of NetBSD.
SEE ALSO
CAVEATS
The powernow driver is considered a legacy
interface to be used only with relatively old systems. The driver supports
only AMD processor families K7 (for instance, Duron, Athlon, and some
Semprons) and K8 (namely, the early 64-bit family, including Athlon 64,
Opteron, and Turion).