1=================== 2intel_gpu_frequency 3=================== 4 5-------------------------------- 6Manipulate Intel GPU frequencies 7-------------------------------- 8.. include:: defs.rst 9:Author: IGT Developers <igt-dev@lists.freedesktop.org> 10:Date: 2016-03-01 11:Version: |PACKAGE_STRING| 12:Copyright: 2015-2016 Intel Corporation 13:Manual section: |MANUAL_SECTION| 14:Manual group: |MANUAL_GROUP| 15 16SYNOPSIS 17======== 18 19**intel_gpu_frequency** [*OPTIONS*] 20 21DESCRIPTION 22=========== 23 24A program to manipulate Intel GPU frequencies. Intel GPUs will automatically 25throttle the frequencies based on system demands, up when needed, down when 26not. This tool should only be used for debugging performance problems, or trying 27to get a stable frequency while benchmarking. 28 29Intel GPUs only accept specific frequencies. The tool may, or may not attempt to 30adjust requests to the proper frequency if they aren't correct. This may lead to 31non-obvious failures when setting frequency. Multiples of 50MHz is usually a 32safe bet. 33 34OPTIONS 35======= 36 37-e 38 Lock frequency to the most efficient frequency. 39 40-g, --get 41 Get all the current frequency settings. 42 43-s FREQUENCY, --set=FREQUENCY 44 Lock frequency to an absolute value (MHz). 45 46-c, --custom 47 Set a min, or max frequency "min=X | max=Y". 48 49-m, --max 50 Lock frequency to max frequency. 51 52-i, --min 53 Lock frequency to min (never a good idea, DEBUG ONLY). 54 55-d, --defaults 56 Return the system to hardware defaults. 57 58-h, --help 59 Show help. 60 61-v, --version 62 Show version. 63 64EXAMPLES 65======== 66 67intel_gpu_frequency -gmin,cur 68 Get the current and minimum frequency. 69 70intel_gpu_frequency -s 400 71 Lock frequency to 400Mhz. 72 73intel_gpu_frequency -c max=750 74 Set the max frequency to 750MHz 75 76REPORTING BUGS 77============== 78 79Report bugs to https://bugs.freedesktop.org. 80