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