- Show CPU frequency information for all CPUs:
- Show CPU frequency information for the specified CPU:
cpufreq-info -c [cpu_number]
- Show the allowed minimum and maximum CPU frequency:
- Show the current minimum and maximum CPU frequency and policy in table format:
- Show available CPU frequency policies:
- Show current CPU work frequency in a human-readable format, according to the cpufreq kernel module:
cpufreq-info -f -m
- Show current CPU work frequency in a human-readable format, by reading it from hardware (only available to root):
sudo cpufreq-info -w -m
-c --cpu <CPU>
<CPU> number which information shall be determined about.
Prints out debug information.
Get frequency the CPU currently runs at, according to the cpufreq core.
Get frequency the CPU currently runs at, by reading it from hardware (only available to root).
Determine the minimum and maximum CPU frequency allowed.
Determines the used cpufreq kernel driver.
Gets the currently used cpufreq policy.
Determines available cpufreq governors.
Determines which CPUs run at the same hardware frequency.
Determines which CPUs need to have their frequency coordinated by software.
Shows cpufreq statistics if available.
Determines the maximum latency on CPU frequency changes.
Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.
human-readable output for the -f, -w, -s and -y parameters.
Prints out the help screen.
You can’t specify more than one of the output specific options -o -e -a -g -p -d -l -w -f -y.
You also can’t specify the -o option combined with the -c option.