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cpupower(1) [centos man page]

CPUPOWER(1)							  cpupower Manual						       CPUPOWER(1)

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 <> Thomas Renninger <> 07/03/2011 CPUPOWER(1)

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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 <> - author Mattia Dongili<> - first autolibtoolization SEE ALSO
cpupower-frequency-set(1), cpupower(1) 0.1 CPUPOWER-FREQUENCY-INFO(1)
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