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POWERMON(8)		FreeBSD	System Manager's Manual		   POWERMON(8)

NAME
     powermon -- display CPU power consumption

SYNOPSIS
     powermon [-d device] [-f family] [-h] [-m model] [-t type]	[-v vendor]

DESCRIPTION
     The powermon utility reads	the CPU	internal power counters, calculates
     the current power consumption and displays	it on a	nice curses interface.
     What counters are available depends on the	CPU.

     powermon requires the cpuctl(4) interface to be availble. Access is
     granted through the read permissions on the /dev/cpuctl* devices.

     All necessary parameters are determined at	program	start via CPUID	and
     MSRs. If some parameters cannot be	detemined or the CPU is	unknown	to
     powermon they can be overridden with the following	options:

     -d	     cpuctl(4) device to operate on. Default is	/dev/cpuctl0. On most
	     CPUs each core is represented by one device, all devices of the
	     same package give the same	readings.

     -f	     CPU family.

     -h	     Print a short help	text and exit.

     -m	     CPU model,	48 characters maximum.

     -t	     CPU type, either CLIENT or	SERVER.

     -v	     CPU vendor. Only CPUs with	GenuineIntel as	vendor string are sup-
	     ported.

COMMANDS
     powermon is controlled with interactive keyboard commands.	The following
     commands are supported:

     q	     Exit the application.

SEE ALSO
     coretemp(4) cpuctl(4)

AUTHORS
     Yamagi Burmeister yamagi@yamagi.org

Bugs
     Currently only Intel CPUs starting	with Sandy Bridge are supported.
     Older Intel CPUs don't have the necessary MSRs, for other vendors the
     code is missing.

     The accuracy of the DRAM counter is highly	dependent on the OEM platform.
     The values	may just be garbage.

FreeBSD	13.0		       October 17, 2021			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | COMMANDS | SEE ALSO | AUTHORS | Bugs

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=powermon&manpath=FreeBSD+13.0-RELEASE+and+Ports>

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