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1.TH "CPUPOWER\-FREQUENCY\-INFO" "1" "0.1" "" "cpupower Manual"
2.SH "NAME"
3.LP
4cpupower\-frequency\-info \- Utility to retrieve cpufreq kernel information
5.SH "SYNTAX"
6.LP
7cpupower [ \-c cpulist ] frequency\-info [\fIoptions\fP]
8.SH "DESCRIPTION"
9.LP
10A small tool which prints out cpufreq information helpful to developers and interested users.
11.SH "OPTIONS"
12.LP
13.TP
14\fB\-e\fR \fB\-\-debug\fR
15Prints out debug information.
16.TP
17\fB\-f\fR \fB\-\-freq\fR
18Get frequency the CPU currently runs at, according to the cpufreq core.
19.TP
20\fB\-w\fR \fB\-\-hwfreq\fR
21Get frequency the CPU currently runs at, by reading it from hardware (only available to root).
22.TP
23\fB\-l\fR \fB\-\-hwlimits\fR
24Determine the minimum and maximum CPU frequency allowed.
25.TP
26\fB\-d\fR \fB\-\-driver\fR
27Determines the used cpufreq kernel driver.
28.TP
29\fB\-p\fR \fB\-\-policy\fR
30Gets the currently used cpufreq policy.
31.TP
32\fB\-g\fR \fB\-\-governors\fR
33Determines available cpufreq governors.
34.TP
35\fB\-a\fR \fB\-\-related\-cpus\fR
36Determines which CPUs run at the same hardware frequency.
37.TP
38\fB\-a\fR \fB\-\-affected\-cpus\fR
39Determines which CPUs need to have their frequency coordinated by software.
40.TP
41\fB\-s\fR \fB\-\-stats\fR
42Shows cpufreq statistics if available.
43.TP
44\fB\-y\fR \fB\-\-latency\fR
45Determines the maximum latency on CPU frequency changes.
46.TP
47\fB\-o\fR \fB\-\-proc\fR
48Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.
49.TP
50\fB\-m\fR \fB\-\-human\fR
51human\-readable output for the \-f, \-w, \-s and \-y parameters.
52.TP
53\fB\-n\fR \fB\-\-no-rounding\fR
54Output frequencies and latencies without rounding off values.
55.TP
56.SH "REMARKS"
57.LP
58By default only values of core zero are displayed. How to display settings of
59other cores is described in the cpupower(1) manpage in the \-\-cpu option section.
60.LP
61You can't specify more than one of the output specific options \-o \-e \-a \-g \-p \-d \-l \-w \-f \-y.
62.LP
63You also can't specify the \-o option combined with the \-c option.
64.SH "FILES"
65.nf
66\fI/sys/devices/system/cpu/cpu*/cpufreq/\fP
67\fI/proc/cpufreq\fP (deprecated)
68\fI/proc/sys/cpu/\fP (deprecated)
69.fi
70.SH "AUTHORS"
71.nf
72Dominik Brodowski <linux@brodo.de> \- author
73Mattia Dongili<malattia@gmail.com> \- first autolibtoolization
74.fi
75.SH "SEE ALSO"
76.LP
77cpupower\-frequency\-set(1), cpupower(1)