cpupower: add page (#8073)

pages/linux/cpupower.md

@@ -0,0 +1,25 @@
+# cpupower
+
+> Tools regarding CPU power and tuning options.
+> This command is available as part of the `cpupower` package, or as part of `kernel-tools` on Fedora.
+> More information: <https://manned.org/cpupower>.
+
+- List CPUs:
+
+`sudo cpupower --cpu {{all}} info`
+
+- Print information about all cores:
+
+`sudo cpupower --cpu {{all}} info`
+
+- Set all CPUs to a power-saving frequency governor:
+
+`sudo cpupower --cpu {{all}} frequency-set --governor {{powersave}}`
+
+- Print CPU 0's available frequency [g]overnors:
+
+`sudo cpupower --cpu {{0}} frequency-info g | grep "analyzing\|governors"`
+
+- Print CPU 4's frequency from the hardware, in a human-readable format:
+
+`sudo cpupower --cpu {{4}} frequency-info --hwfreq --human`