NAME

       intel_gpu_frequency - Manipulate Intel GPU frequencies

SYNOPSIS

       intel_gpu_frequency [OPTIONS]

DESCRIPTION

       A  program  to  manipulate  Intel GPU frequencies. Intel GPUs will automatically throttle the frequencies
       based on system demands, up when needed, down when not. This tool  should  only  be  used  for  debugging
       performance problems, or trying to get a stable frequency while benchmarking.

       Intel  GPUs  only accept specific frequencies. The tool may, or may not attempt to adjust requests to the
       proper frequency if they aren't correct. 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