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Transmeta(TM) Crusoe(TM) LongRun(TM) support.

Chapter

June 30, 2001

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, simi‐ lar 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 <

@kta.att.ne.jp> and Mitsuru IWASAKI <

@FreeBSD.org>.

BSD June 30, 2001 BSD

This manual	Reference	Other manuals
longrun(4freebsd)	referred by	cpufreq(4freebsd)
longrun(4freebsd)	refer to	sysctl(8)

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