FreeBSD manual
download PDF document: longrun.4.pdf
LONGRUN(4) FreeBSD Kernel Interfaces 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:
Name 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>.
FreeBSD 14.0-RELEASE-p11 June 30, 2001 FreeBSD 14.0-RELEASE-p11