LONGRUN(4)          FreeBSD Kernel Interfaces Manual (i386)         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:

     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
     <athlete@kta.att.ne.jp> and Mitsuru IWASAKI <iwasaki@FreeBSD.org>.

FreeBSD 15.1-STABLE-HBSD         June 30, 2001                      LONGRUN(4)