| Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 1 | .TH "cpupower-frequency-info" "1" "0.1" "Mattia Dongili" "" |
| Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 2 | .SH "NAME" |
| 3 | .LP |
| Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 4 | cpupower frequency\-info \- Utility to retrieve cpufreq kernel information |
| Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 5 | .SH "SYNTAX" |
| 6 | .LP |
| Dominik Brodowski | 498ca79 | 2011-08-06 18:11:43 +0200 | [diff] [blame] | 7 | cpupower [ \-c cpulist ] frequency\-info [\fIoptions\fP] |
| Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame] | 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) |