CPUPOWER-MONITOR(1) cpupower Manual CPUPOWER-MONITOR(1) (NAME) cpupower-monitor - (SYNOPSIS) cpupower monitor -l cpupower monitor [-c][-m ,[,...]] [-i seconds] cpupower monitor [-c][-m ,[,...]] command (DESCRIPTION) cpupower-monitor (idle) . command (fork) . cpupower-monitor (sleep state) . . -l . (OPTIONS) -l . : o -m . o ( ). o (overflow) . o ( ): o [T] -> (Thread) o [C] -> (Core) o [P] -> (Processor Package / Socket) o [M] -> (Machine/Platform wide counter) -m ,,... . () -l . -i seconds . -c . Idle_Stats MSR ( ) . cpuidle sysfs cpuidle ( C-state) . command . command . (MONITOR DESCRIPTIONS) Idle_Stats cpuidle . /sys/devices/system/cpu/cpu*/cpuidle/state*/ . . . . . Mperf MSR aperf/mperf ( ) X86 . ( ) . mperf C0 ( ) Cx ( ) . "Idle_Stats" . 2.6.20 2.6.29 acpi-cpufreq aperf/mperf . Nehalem SandyBridge HaswellExtended . ( ) . . ( ) . . IvyBridge Nehalem SandyBridge . IvyBridge Nehalem SandyBridge . HaswellExtended Haswell ( 0x45) . Fam_12h Fam_14h AMD ( 12h 14h). PCI (offline) . NBP1 ( P1 North Bridge P1) . P1 . NBP1 . . (EXAMPLES) "cpupower monitor -l" : Monitor "Mperf" (3 states) - Might overflow after 922000000 s ... Monitor "Idle_Stats" (3 states) - Might overflow after 4294967295 s ... cpupower monitor -m Idle_Stats,Mperf scp /tmp/test /nfs/tmp scp Mperf Idle_Stats . : cpupower monitor cat /dev/zero >/dev/null /dev/null . . CTRL-c . (REFERENCES) "BIOS and Kernel Developer's Guide (BKDG) for AMD Family 14h Processors" https://support.amd.com/us/Processor_TechDocs/43170.pdf "What Is Intel(R) Turbo Boost Technology?" https://www.intel.com/content/www/us/en/gaming/resources/turbo- boost.html "Power Management - Technology Overview" https://cdrdv2.intel.com/v1/dl/getContent/637748 "Intel(R) 64 and IA-32 Architectures Software Developer's Manual Volume 3B: System Programming Guide" https://www.intel.com/products/processor/manuals (FILES) /dev/cpu/*/msr /sys/devices/system/cpu/cpu*/cpuidle/state*/. (SEE ALSO) powertop(8), msr(4), vmstat(8) (AUTHORS) Thomas Renninger Nehalem SandyBridge turbostat.8 Len Brown 22/02/2011 CPUPOWER-MONITOR(1)