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Transmeta(TM) Crusoe(TM) LongRun(TM) utility
longrun [-c device] [-m device] [-hlpv] [-f flag] [-s low high]
The longrun utility is used to control and query LongRun settings on Transmeta Crusoe
Set the CPUID device. The default CPUID device is /dev/cpu/0/cpuid.
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.
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
-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.
No environment variables are used.
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.
acpid(8), apmd(8), hdparm(8)
Daniel Quinlan <firstname.lastname@example.org>
February 14, 2001 LONGRUN(1)
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