LONGRUN(1)                                             LONGRUN(1)



NAME
       Transmeta(TM) Crusoe(TM) LongRun(TM) utility

SYNOPSIS
       longrun  [-c device] [-m device] [-hlpv] [-f flag] [-s low
       high]

DESCRIPTION
       The longrun utility is used to control and  query  LongRun
       settings on Transmeta Crusoe processors.

       -c device
              Set  the CPUID device.  The default CPUID device is
              /dev/cpu/0/cpuid.

       -m device
              Set the MSR device.  The default  CPUID  device  is
              /dev/cpu/0/msr.

       -h     Print help.

       -l     List    LongRun    information    about   available
              performance levels for the CPU.

              The following values are reported on all  Transmeta
              CPUs that implement LongRun.

                 %      An available performance level, expressed
                        as  a  percentage  of  range of available
                        core CPU frequencies.  0  corresponds  to
                        the  lowest  available  frequency and 100
                        corresponds to the highest.

                 MHz    The core CPU frequency at that level.

                 Volts  The core CPU voltage at that level.

                 usage  The power usage relative to  the  maximum
                        performance level.

       -p     Print  current LongRun settings and status: whether
              LongRun  is  enabled,   whether   LongRun   Thermal
              Extensions   are   active,   the   current  LongRun
              performance  window  (expressed  as  a   percentile
              range),   the  current  LongRun  performance  level
              (expressed  as  a  percentile),  and  the   current
              LongRun flags.

       -v     Be more verbose.

       -f flag
              Set  a  LongRun  mode  flag.   Currently,  the  two
              supported flags are performance and economy.   This
              controls  whether  the processor is in "performance
              mode" or "economy mode".

       -s low high
              Set the current LongRun  performance  window  as  a
              percentile range.  The low number cannot be greater
              than the high  number.   The  minimum  and  maximum
              performance  values  accepted  by the CPU are 0 and
              100, respectively.

ENVIRONMENT
       No environment variables are used.

FILES
       This program requires that the Linux CPUID and MSR devices
       be compiled into the kernel (or loaded as kernel modules),
       that the CPUID character device be readable, and that  the
       MSR character device be both readable and writable.

SEE ALSO
       acpid(8), apmd(8), hdparm(8)

AUTHOR
       Daniel Quinlan <quinlan@transmeta.com>



                        February 14, 2001              LONGRUN(1)
