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

6       cpupower-frequency-info  -  Utility to retrieve cpufreq kernel informa‐
7       tion
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SYNTAX

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

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

17       -e --debug
18              Prints out debug information.
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20       -f --freq
21              Get  frequency  the  CPU  currently  runs  at,  according to the
22              cpufreq core.
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24       -w --hwfreq
25              Get frequency the CPU currently runs  at,  by  reading  it  from
26              hardware (only available to root).
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28       -l --hwlimits
29              Determine the minimum and maximum CPU frequency allowed.
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31       -d --driver
32              Determines the used cpufreq kernel driver.
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34       -p --policy
35              Gets the currently used cpufreq policy.
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37       -g --governors
38              Determines available cpufreq governors.
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40       -a --related-cpus
41              Determines which CPUs run at the same hardware frequency.
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43       -a --affected-cpus
44              Determines  which  CPUs need to have their frequency coordinated
45              by software.
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47       -s --stats
48              Shows cpufreq statistics if available.
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50       -y --latency
51              Determines the maximum latency on CPU frequency changes.
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53       -o --proc
54              Prints out information like provided by the /proc/cpufreq inter‐
55              face in 2.4. and early 2.6. kernels.
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57       -m --human
58              human-readable output for the -f, -w, -s and -y parameters.
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60       -n --no-rounding
61              Output frequencies and latencies without rounding off values.
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63       -c --perf
64              Get  performances and frequencies capabilities of CPPC, by read‐
65              ing it from hardware (only available on the hardware with CPPC).
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68       REMARKS
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70       By default only values of core zero are displayed. How to display  set‐
71       tings  of  other  cores  is described in the cpupower(1) manpage in the
72       --cpu option section.
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74       You can't specify more than one of the output specific options -o -e -a
75       -g -p -d -l -w -f -y.
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77       You also can't specify the -o option combined with the -c option.
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FILES

80       /sys/devices/system/cpu/cpu*/cpufreq/
81       /proc/cpufreq (deprecated)
82       /proc/sys/cpu/ (deprecated)
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AUTHORS

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

89       cpupower-frequency-set(1), cpupower(1)
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93                                      0.1           CPUPOWER-FREQUENCY-INFO(1)
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