Last Change: 2018-09-07, 16:50
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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 |
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|
3: maximum frequency mode |
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|
hw.crusoe.frequency |
||||
|
integer |
||||
|
no |
||||
|
Current frequency (MHz). |
||||
|
hw.crusoe.voltage |
||||
|
integer |
||||
|
no |
||||
|
Current voltage (mV). |
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|
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 DOT att DOT ne DOT jp〉 and Mitsuru IWASAKI 〈 iwasaki AT FreeBSD DOT org〉 .
BSD June 30, 2001 BSD