78 lines
2.3 KiB
Groff
78 lines
2.3 KiB
Groff
|
.TH "CPUPOWER\-FREQUENCY\-INFO" "1" "0.1" "" "cpupower Manual"
|
||
|
|
.SH "NAME"
|
||
|
|
.LP
|
||
|
|
cpupower\-frequency\-info \- Utility to retrieve cpufreq kernel information
|
||
|
|
.SH "SYNTAX"
|
||
|
|
.LP
|
||
|
|
cpupower [ \-c cpulist ] frequency\-info [\fIoptions\fP]
|
||
|
|
.SH "DESCRIPTION"
|
||
|
|
.LP
|
||
|
|
A small tool which prints out cpufreq information helpful to developers and interested users.
|
||
|
|
.SH "OPTIONS"
|
||
|
|
.LP
|
||
|
|
.TP
|
||
|
|
\fB\-e\fR \fB\-\-debug\fR
|
||
|
|
Prints out debug information.
|
||
|
|
.TP
|
||
|
|
\fB\-f\fR \fB\-\-freq\fR
|
||
|
|
Get frequency the CPU currently runs at, according to the cpufreq core.
|
||
|
|
.TP
|
||
|
|
\fB\-w\fR \fB\-\-hwfreq\fR
|
||
|
|
Get frequency the CPU currently runs at, by reading it from hardware (only available to root).
|
||
|
|
.TP
|
||
|
|
\fB\-l\fR \fB\-\-hwlimits\fR
|
||
|
|
Determine the minimum and maximum CPU frequency allowed.
|
||
|
|
.TP
|
||
|
|
\fB\-d\fR \fB\-\-driver\fR
|
||
|
|
Determines the used cpufreq kernel driver.
|
||
|
|
.TP
|
||
|
|
\fB\-p\fR \fB\-\-policy\fR
|
||
|
|
Gets the currently used cpufreq policy.
|
||
|
|
.TP
|
||
|
|
\fB\-g\fR \fB\-\-governors\fR
|
||
|
|
Determines available cpufreq governors.
|
||
|
|
.TP
|
||
|
|
\fB\-a\fR \fB\-\-related\-cpus\fR
|
||
|
|
Determines which CPUs run at the same hardware frequency.
|
||
|
|
.TP
|
||
|
|
\fB\-a\fR \fB\-\-affected\-cpus\fR
|
||
|
|
Determines which CPUs need to have their frequency coordinated by software.
|
||
|
|
.TP
|
||
|
|
\fB\-s\fR \fB\-\-stats\fR
|
||
|
|
Shows cpufreq statistics if available.
|
||
|
|
.TP
|
||
|
|
\fB\-y\fR \fB\-\-latency\fR
|
||
|
|
Determines the maximum latency on CPU frequency changes.
|
||
|
|
.TP
|
||
|
|
\fB\-o\fR \fB\-\-proc\fR
|
||
|
|
Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.
|
||
|
|
.TP
|
||
|
|
\fB\-m\fR \fB\-\-human\fR
|
||
|
|
human\-readable output for the \-f, \-w, \-s and \-y parameters.
|
||
|
|
.TP
|
||
|
|
\fB\-n\fR \fB\-\-no-rounding\fR
|
||
|
|
Output frequencies and latencies without rounding off values.
|
||
|
|
.TP
|
||
|
|
.SH "REMARKS"
|
||
|
|
.LP
|
||
|
|
By default only values of core zero are displayed. How to display settings of
|
||
|
|
other cores is described in the cpupower(1) manpage in the \-\-cpu option section.
|
||
|
|
.LP
|
||
|
|
You can't specify more than one of the output specific options \-o \-e \-a \-g \-p \-d \-l \-w \-f \-y.
|
||
|
|
.LP
|
||
|
|
You also can't specify the \-o option combined with the \-c option.
|
||
|
|
.SH "FILES"
|
||
|
|
.nf
|
||
|
|
\fI/sys/devices/system/cpu/cpu*/cpufreq/\fP
|
||
|
|
\fI/proc/cpufreq\fP (deprecated)
|
||
|
|
\fI/proc/sys/cpu/\fP (deprecated)
|
||
|
|
.fi
|
||
|
|
.SH "AUTHORS"
|
||
|
|
.nf
|
||
|
|
Dominik Brodowski <linux@brodo.de> \- author
|
||
|
|
Mattia Dongili<malattia@gmail.com> \- first autolibtoolization
|
||
|
|
.fi
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.LP
|
||
|
|
cpupower\-frequency\-set(1), cpupower(1)
|