Manpages

LONGRUN(4) BSD/i386 Kernel Interfaces Manual 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

integer

yes

LongRun mode:

Name

hw.crusoe.longrun

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 [AT] kta.jp> and Mitsuru IWASAKI <iwasaki [AT] FreeBSD.org>.

BSD June 30, 2001 BSD