LONGRUN(4) | Device Drivers Manual (i386) | LONGRUN(4) |
longrun
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Transmeta(TM) Crusoe(TM) LongRun(TM) support
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 (%). |
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
The Transmeta(TM) Crusoe(TM) LongRun(TM) support first appeared in FreeBSD 4.4.
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 |