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LONGRUN(4) Device Drivers Manual (i386) LONGRUN(4)

NAME

longrun — Transmeta(TM) Crusoe(TM) LongRun(TM) support

SYNOPSIS

LongRun support is a collection of power saving modes for the Transmeta Crusoe chips, similar in scope to Intel's SpeedStep. The following sysctl(8) MIBs control the different CPU modes:

Type Changeable Description
hw.crusoe.longrun integer yes LongRun mode:
0: minimum frequency mode
1: power-saving mode
2: performance mode
3: maximum frequency mode
hw.crusoe.frequency integer no Current frequency (MHz).
hw.crusoe.voltage integer no Current voltage (mV).
hw.crusoe.percentage integer no Processing performance (%).

EXAMPLES

Print the current status:

% sysctl hw.crusoe

To set LongRun mode to performance oriented variable frequency mode (less power savings):

# sysctl hw.crusoe.longrun=2

HISTORY

The Transmeta(TM) Crusoe(TM) LongRun(TM) support first appeared in FreeBSD 4.4.

AUTHORS

LongRun support and this manual page were written by Tamotsu HATTORI <athlete@kta.att.ne.jp> and Mitsuru IWASAKI <iwasaki@FreeBSD.org>.

June 30, 2001 Debian