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Sets the interval between idle percentage tests and possible speed
changes in tenths of a second (default is 20).
-p
Sets the CPU core idle percentage thresholds. is the idle
percentage below which a CPU will be set to the highest possible
speed. is the idle percentage above which a CPU's
speed will be decreased and below which a CPU's speed will be
increased (defaults are 10 and 25).
-m
Sets the minimum speed in KHz below which a CPU core won't be set.
-M
Sets the maximum speed in KHz above which a CPU core won't be set.
-n
Do not treat niced programs as idle time.
-w
Do not treat time waiting for IO as idle time.
-t
Sets the ACPI temperature file and the temperature at which CPU
cores will be set to minimum speed.
-T
Sets the interval at which the temperature will be polled in
tenths of a second (default is 10).
(Requires the '-t' option above.)
-a
Sets the ACPI AC adapter state file and tells the program to set
the CPU cores to minimum speed when the AC adapter is disconnected.
(This is the default but is changeable by the '-D' option below).
-A
Sets the interval at which the AC adapter state will be polled in
tenths of a second (default is 50).
(Requires the '-a' option above.)
-C
Run at maximum speed when AC adapter is connected.
(Requires the '-a' option above.)
-D
Do NOT force minimum speed when AC adapter is disconnected.
(Requires the '-a' option above.)
-r
Restores previous speed on program exit.
-S " [[] ...]"
Manage only a single group of CPU cores. All of the specified
cores will controlled as a single group (locked to the same speed)
and are in the range 0 to n-1 where 'n' is the total number of CPU
cores in the system. Note that when specifying multiple cores the
list must be enclosed in quotes. Without this option the program
creates copies of itself to manage every core of every CPU in the
system and automatically determines core groups. If you are running
on an old kernel and get an error message about not being able to
open an "affected_cpus" file then you must run this program
separately for each group of cores that must be controlled together
(which probably means for each physical CPU) and use this option.
To have a CPU core stay at the highest clock speed to maximize performance
send the process controlling that CPU core the SIGUSR1 signal.
To have a CPU core stay at the lowest clock speed to maximize battery life
send the process controlling that CPU core the SIGUSR2 signal.
To resume having a CPU core's clock speed dynamically scaled send the
process controlling that CPU core the SIGHUP signal.
Author:
%s
[core%u] Could not read affected cores from: %s Could not find any CPUFreq controlled CPU cores to manage Cannot write to speed control file: %s /proc/stat 1.5 Carl E. Thompson - cet [at] carlthompson.net (Copyright 2002 - 2008) /sys/devices/system/cpu/cpu%u/cpufreq /sys/devices/system/cpu/cpu%u/cpufreq/affected_cpus /sys/devices/system/cpu/cpu%u/cpufreq/scaling_min_freq /sys/devices/system/cpu/cpu%u/cpufreq/scaling_max_freq /sys/devices/system/cpu/cpu%u/cpufreq/scaling_setspeed /sys/devices/system/cpu/cpu%u/cpufreq/scaling_governor userspace ; $ %L )t $ U } 4 l 9 8 D \ 2 D X| zR x 4 L $ d e AYIA $ BLD G L BBL E(A0A8G8A0A(B BBB , X1 BAA F0b AAB 4 Y( D_ $ L i_ AFG0KDA4 t BNA J AAB ]) D` 4 n? BBD A(F0i(A ABB $ uv AAF eCA4 $ BEK D(D0h(A ABB$ \ Q ALBA = L 1T BBB B(A0A8G88A0A(B BBB L 5I BBI B(A0A8DP
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