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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 information5.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\fR15Prints out debug information.16.TP 17\fB\-f\fR \fB\-\-freq\fR18Get frequency the CPU currently runs at, according to the cpufreq core.19.TP 20\fB\-w\fR \fB\-\-hwfreq\fR21Get frequency the CPU currently runs at, by reading it from hardware (only available to root).22.TP 23\fB\-l\fR \fB\-\-hwlimits\fR24Determine the minimum and maximum CPU frequency allowed.25.TP 26\fB\-d\fR \fB\-\-driver\fR27Determines the used cpufreq kernel driver.28.TP 29\fB\-p\fR \fB\-\-policy\fR30Gets the currently used cpufreq policy.31.TP 32\fB\-g\fR \fB\-\-governors\fR33Determines available cpufreq governors.34.TP 35\fB\-r\fR \fB\-\-related\-cpus\fR36Determines which CPUs run at the same hardware frequency.37.TP 38\fB\-a\fR \fB\-\-affected\-cpus\fR39Determines which CPUs need to have their frequency coordinated by software.40.TP 41\fB\-s\fR \fB\-\-stats\fR42Shows cpufreq statistics if available.43.TP 44\fB\-y\fR \fB\-\-latency\fR45Determines the maximum latency on CPU frequency changes.46.TP 47\fB\-o\fR \fB\-\-proc\fR48Prints 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\fR51human\-readable output for the \-f, \-w, \-s and \-y parameters.52.TP 53\fB\-n\fR \fB\-\-no-rounding\fR54Output frequencies and latencies without rounding off values.55.TP 56\fB\-c\fR \fB\-\-perf\fR57Get performances and frequencies capabilities of CPPC, by reading it from hardware (only available on the hardware with CPPC).58.TP59.SH "REMARKS"60.LP 61By default only values of core zero are displayed. How to display settings of62other cores is described in the cpupower(1) manpage in the \-\-cpu option section.63.LP 64You can't specify more than one of the output specific options \-o \-e \-a \-g \-p \-d \-l \-w \-f \-y.65.LP 66You also can't specify the \-o option combined with the \-c option.67.SH "FILES"68.nf 69\fI/sys/devices/system/cpu/cpu*/cpufreq/\fP 70\fI/proc/cpufreq\fP (deprecated) 71\fI/proc/sys/cpu/\fP (deprecated)72.fi 73.SH "AUTHORS"74.nf75Dominik Brodowski <linux@brodo.de> \- author 76Mattia Dongili<malattia@gmail.com> \- first autolibtoolization77.fi78.SH "SEE ALSO"79.LP 80cpupower\-frequency\-set(1), cpupower(1)81