cpupower(1) [centos man page]

CPUPOWER(1)							  cpupower Manual						       CPUPOWER(1)

NAME

       cpupower - Shows and sets processor power related values

SYNOPSIS

       cpupower [ -c cpulist ] <command> [ARGS]

       cpupower -v|--version

       cpupower -h|--help

DESCRIPTION

       cpupower  is a collection of tools to examine and tune power saving related features of your processor.

       The manpages of the commands (cpupower-<command>(1)) provide detailed descriptions of supported features. Run cpupower help to get an over-
       view of supported commands.

Options
       --help, -h
	   Shows supported commands and general usage.

       --cpu cpulist,  -c cpulist
	   Only show or set values for specific cores.	This option is not supported by all commands, details can be found in the manpages of  the
	   commands.

	   Some commands access all cores (typically the *-set commands), some only the first core (typically the *-info commands) by default.

	   The syntax for <cpulist> is based on how the kernel exports CPU bitmasks via sysfs files. Some examples:

	       Input	       Equivalent to

	       all	       all cores

	       0-3	       0,1,2,3

	       0-7:2	       0,2,4,6

	       1,3,5-7	       1,3,5,6,7

	       0-3:2,8-15:4    0,2,8,12

       --version,  -v
	   Print the package name and version number.

SEE ALSO

       cpupower-set(1),  cpupower-info(1),  cpupower-idle(1),  cpupower-frequency-set(1),  cpupower-frequency-info(1), cpupower-monitor(1), power-
       top(1)

AUTHORS

       --perf-bias parts written by Len Brown <len.brown@intel.com>
       Thomas Renninger <trenn@suse.de>

								    07/03/2011							       CPUPOWER(1)

CPUPOWER-FREQUENCY-INFO(1)					  cpupower Manual					CPUPOWER-FREQUENCY-INFO(1)

NAME

       cpupower frequency-info - Utility to retrieve cpufreq kernel information

SYNTAX

       cpupower [ -c cpulist ] frequency-info [options]

DESCRIPTION

       A small tool which prints out cpufreq information helpful to developers and interested users.

OPTIONS

       -e --debug
	      Prints out debug information.

       -f --freq
	      Get frequency the CPU currently runs at, according to the cpufreq core.

       -w --hwfreq
	      Get frequency the CPU currently runs at, by reading it from hardware (only available to root).

       -l --hwlimits
	      Determine the minimum and maximum CPU frequency allowed.

       -d --driver
	      Determines the used cpufreq kernel driver.

       -p --policy
	      Gets the currently used cpufreq policy.

       -g --governors
	      Determines available cpufreq governors.

       -a --related-cpus
	      Determines which CPUs run at the same hardware frequency.

       -a --affected-cpus
	      Determines which CPUs need to have their frequency coordinated by software.

       -s --stats
	      Shows cpufreq statistics if available.

       -y --latency
	      Determines the maximum latency on CPU frequency changes.

       -o --proc
	      Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.

       -m --human
	      human-readable output for the -f, -w, -s and -y parameters.

       REMARKS

       By  default  only  values of core zero are displayed. How to display settings of other cores is described in the cpupower(1) manpage in the
       --cpu option section.

       You can't specify more than one of the output specific options -o -e -a -g -p -d -l -w -f -y.

       You also can't specify the -o option combined with the -c option.

FILES

       /sys/devices/system/cpu/cpu*/cpufreq/
       /proc/cpufreq (deprecated)
       /proc/sys/cpu/ (deprecated)

AUTHORS

       Dominik Brodowski <linux@brodo.de> - author
       Mattia Dongili<malattia@gmail.com> - first autolibtoolization

SEE ALSO

       cpupower-frequency-set(1), cpupower(1)

									0.1						CPUPOWER-FREQUENCY-INFO(1)