1 .TH "CPUPOWER\-FREQUENCY\-INFO" "1" "0.1" "" "cpupower Manual"
4 cpupower frequency\-info \- Utility to retrieve cpufreq kernel information
7 cpupower [ \-c cpulist ] frequency\-info [\fIoptions\fP]
10 A small tool which prints out cpufreq information helpful to developers and interested users.
14 \fB\-e\fR \fB\-\-debug\fR
15 Prints out debug information.
17 \fB\-f\fR \fB\-\-freq\fR
18 Get frequency the CPU currently runs at, according to the cpufreq core.
20 \fB\-w\fR \fB\-\-hwfreq\fR
21 Get frequency the CPU currently runs at, by reading it from hardware (only available to root).
23 \fB\-l\fR \fB\-\-hwlimits\fR
24 Determine the minimum and maximum CPU frequency allowed.
26 \fB\-d\fR \fB\-\-driver\fR
27 Determines the used cpufreq kernel driver.
29 \fB\-p\fR \fB\-\-policy\fR
30 Gets the currently used cpufreq policy.
32 \fB\-g\fR \fB\-\-governors\fR
33 Determines available cpufreq governors.
35 \fB\-a\fR \fB\-\-related\-cpus\fR
36 Determines which CPUs run at the same hardware frequency.
38 \fB\-a\fR \fB\-\-affected\-cpus\fR
39 Determines which CPUs need to have their frequency coordinated by software.
41 \fB\-s\fR \fB\-\-stats\fR
42 Shows cpufreq statistics if available.
44 \fB\-y\fR \fB\-\-latency\fR
45 Determines the maximum latency on CPU frequency changes.
47 \fB\-o\fR \fB\-\-proc\fR
48 Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.
50 \fB\-m\fR \fB\-\-human\fR
51 human\-readable output for the \-f, \-w, \-s and \-y parameters.
55 By default only values of core zero are displayed. How to display settings of
56 other cores is described in the cpupower(1) manpage in the \-\-cpu option section.
58 You can't specify more than one of the output specific options \-o \-e \-a \-g \-p \-d \-l \-w \-f \-y.
60 You also can't specify the \-o option combined with the \-c option.
63 \fI/sys/devices/system/cpu/cpu*/cpufreq/\fP
64 \fI/proc/cpufreq\fP (deprecated)
65 \fI/proc/sys/cpu/\fP (deprecated)
69 Dominik Brodowski <linux@brodo.de> \- author
70 Mattia Dongili<malattia@gmail.com> \- first autolibtoolization
74 cpupower\-frequency\-set(1), cpupower(1)