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

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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
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longrun(4freebsd) referred by cpufreq(4freebsd)
refer to sysctl(8)
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