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INTEL_GPU_FREQUENCY(1)	    General Commands Manual	INTEL_GPU_FREQUENCY(1)

NAME
       intel_gpu_frequency - Manipulate	Intel GPU frequencies

SYNOPSIS
       intel_gpu_frequency [OPTIONS]

DESCRIPTION
       A program to manipulate Intel GPU frequencies. Intel GPUs will automat-
       ically  throttle	 the  frequencies  based  on  system  demands, up when
       needed, down when not. This tool	should only be used for	debugging per-
       formance	problems, or trying to get a stable frequency while benchmark-
       ing.

       Intel GPUs only accept specific frequencies. The	tool may, or  may  not
       attempt	to adjust requests to the proper frequency if they aren't cor-
       rect. This may lead to non-obvious  failures  when  setting  frequency.
       Multiples of 50MHz is usually a safe bet.

OPTIONS
       -e     Lock frequency to	the most efficient frequency.

       -g, --get
	      Get all the current frequency settings.

       -s FREQUENCY, --set=FREQUENCY
	      Lock frequency to	an absolute value (MHz).

       -c, --custom
	      Set a min, or max	frequency "min=X | max=Y".

       -m, --max
	      Lock frequency to	max frequency.

       -i, --min
	      Lock frequency to	min (never a good idea,	DEBUG ONLY).

       -d, --defaults
	      Return the system	to hardware defaults.

       -h, --help
	      Show help.

       -v, --version
	      Show version.

EXAMPLES
       intel_gpu_frequency -gmin,cur
	      Get the current and minimum frequency.

       intel_gpu_frequency -s 400
	      Lock frequency to	400Mhz.

       intel_gpu_frequency -c max=750
	      Set the max frequency to 750MHz

REPORTING BUGS
       Report bugs to  <https://bugs.freedesktop.org> .

AUTHOR
       IGT Developers <igt-dev@lists.freedesktop.org>

COPYRIGHT
       2015-2016 Intel Corporation

igt-gpu-tools 1.26		  2016-03-01		INTEL_GPU_FREQUENCY(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=intel_gpu_frequency&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

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