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Diffstat (limited to 'tools/power/cpupower/man/cpupower-frequency-info.1')
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1 | .TH "cpufreq-info" "1" "0.1" "Mattia Dongili" "" | ||
2 | .SH "NAME" | ||
3 | .LP | ||
4 | cpufreq\-info \- Utility to retrieve cpufreq kernel information | ||
5 | .SH "SYNTAX" | ||
6 | .LP | ||
7 | cpufreq\-info [\fIoptions\fP] | ||
8 | .SH "DESCRIPTION" | ||
9 | .LP | ||
10 | A 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 | ||
15 | Prints out debug information. | ||
16 | .TP | ||
17 | \fB\-f\fR \fB\-\-freq\fR | ||
18 | Get frequency the CPU currently runs at, according to the cpufreq core. | ||
19 | .TP | ||
20 | \fB\-w\fR \fB\-\-hwfreq\fR | ||
21 | Get frequency the CPU currently runs at, by reading it from hardware (only available to root). | ||
22 | .TP | ||
23 | \fB\-l\fR \fB\-\-hwlimits\fR | ||
24 | Determine the minimum and maximum CPU frequency allowed. | ||
25 | .TP | ||
26 | \fB\-d\fR \fB\-\-driver\fR | ||
27 | Determines the used cpufreq kernel driver. | ||
28 | .TP | ||
29 | \fB\-p\fR \fB\-\-policy\fR | ||
30 | Gets the currently used cpufreq policy. | ||
31 | .TP | ||
32 | \fB\-g\fR \fB\-\-governors\fR | ||
33 | Determines available cpufreq governors. | ||
34 | .TP | ||
35 | \fB\-a\fR \fB\-\-related\-cpus\fR | ||
36 | Determines which CPUs run at the same hardware frequency. | ||
37 | .TP | ||
38 | \fB\-a\fR \fB\-\-affected\-cpus\fR | ||
39 | Determines which CPUs need to have their frequency coordinated by software. | ||
40 | .TP | ||
41 | \fB\-s\fR \fB\-\-stats\fR | ||
42 | Shows cpufreq statistics if available. | ||
43 | .TP | ||
44 | \fB\-y\fR \fB\-\-latency\fR | ||
45 | Determines the maximum latency on CPU frequency changes. | ||
46 | .TP | ||
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. | ||
49 | .TP | ||
50 | \fB\-m\fR \fB\-\-human\fR | ||
51 | human\-readable output for the \-f, \-w, \-s and \-y parameters. | ||
52 | .TP | ||
53 | \fB\-h\fR \fB\-\-help\fR | ||
54 | Prints out the help screen. | ||
55 | .SH "REMARKS" | ||
56 | .LP | ||
57 | By default only values of core zero are displayed. How to display settings of | ||
58 | other cores is described in the cpupower(1) manpage in the \-\-cpu option section. | ||
59 | .LP | ||
60 | You can't specify more than one of the output specific options \-o \-e \-a \-g \-p \-d \-l \-w \-f \-y. | ||
61 | .LP | ||
62 | You also can't specify the \-o option combined with the \-c option. | ||
63 | .SH "FILES" | ||
64 | .nf | ||
65 | \fI/sys/devices/system/cpu/cpu*/cpufreq/\fP | ||
66 | \fI/proc/cpufreq\fP (deprecated) | ||
67 | \fI/proc/sys/cpu/\fP (deprecated) | ||
68 | .fi | ||
69 | .SH "AUTHORS" | ||
70 | .nf | ||
71 | Dominik Brodowski <linux@brodo.de> \- author | ||
72 | Mattia Dongili<malattia@gmail.com> \- first autolibtoolization | ||
73 | .fi | ||
74 | .SH "SEE ALSO" | ||
75 | .LP | ||
76 | cpupower\-frequency\-set(1), cpupower(1) | ||