admin-guide/pm/intel-speed-select.rst

4 Intel(R) Speed Select Technology User Guide
7 The Intel(R) Speed Select Technology (Intel(R) SST) provides a powerful new
14 - https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-artic…
15 - https://builders.intel.com/docs/networkbuilders/intel-speed-select-technology-base-frequency-enha…
21 and configure these features is by using the Intel Speed Select utility.
23 This document explains how to use the Intel Speed Select tool to enumerate and
29 intel-speed-select configuration tool
32 Most Linux distribution packages may include the "intel-speed-select" tool. If not,
38 # cd tools/power/x86/intel-speed-select/
47 # intel-speed-select --help
52 # intel-speed-select perf-profile --help
56 # intel-speed-select perf-profile info --help
62 #intel-speed-select --info
66  # intel-speed-select --info
67  Intel(R) Speed Select Technology
79 Intel(R) Speed Select Technology - Performance Profile (Intel(R) SST-PP)
84 to choose a specific server configuration statically.  This Intel(R) Speed Select
91 "perf-profile" when using the Intel Speed Select tool.
99  # intel-speed-select perf-profile get-config-levels
100  Intel(R) Speed Select Technology
124  # intel-speed-select perf-profile get-lock-status
125  Intel(R) Speed Select Technology
143  # intel-speed-select perf-profile info -l 0
144  Intel(R) Speed Select Technology
155         speed-select-turbo-freq:disabled
156         speed-select-base-freq:disabled
169 understand more, execute "intel-speed-select perf-profile info" for performance
172  # intel-speed-select perf-profile info -l 4
173  Intel(R) Speed Select Technology
184         speed-select-turbo-freq:disabled
185         speed-select-base-freq:unsupported
198  # intel-speed-select perf-profile get-config-current-level
199  Intel(R) Speed Select Technology
243  # intel-speed-select -d perf-profile set-config-level -l 4 -o
244  Intel(R) Speed Select Technology
269 other two Intel(R) SST features (Intel(R) Speed Select Technology - Base Frequency
270 (Intel(R) SST-BF) and Intel(R) Speed Select Technology - Turbo Frequency (Intel
277        speed-select-turbo-freq:disabled
278        speed-select-base-freq:disabled
281        speed-select-turbo-freq:disabled
282        speed-select-base-freq:unsupported
284 Given these results, the "speed-select-base-freq" (Intel(R) SST-BF) in level 4
287 This means that at performance level 4, the "speed-select-base-freq" feature is
290 "speed-select-turbo-freq" (Intel(R) SST-TF) is supported at both performance
294 technology called Intel(R) Speed Select Technology - Core Power (Intel(R) SST-CP).
298 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP)
301 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP) is an interface that
321  # intel-speed-select core-power enable --help
322  Intel(R) Speed Select Technology
349  # intel-speed-select core-power enable
350  Intel(R) Speed Select Technology
368  # intel-speed-select -c 0 core-power info
369  Intel(R) Speed Select Technology
396  # intel-speed-select core-power config --help
397  Intel(R) Speed Select Technology
407  # intel-speed-select core-power config -c 0
408  Intel(R) Speed Select Technology
435  # intel-speed-select core-power get-config -c 0
436  Intel(R) Speed Select Technology
464  # intel-speed-select core-power assoc --help
465  Intel(R) Speed Select Technology
473  # intel-speed-select -c 10 core-power assoc -c 3
474  Intel(R) Speed Select Technology
489  # intel-speed-select -c 10 core-power get-assoc
490  Intel(R) Speed Select Technology
506 # intel-speed-select core-power disable
514 Intel(R) Speed Select Technology - Base Frequency (Intel(R) SST-BF)
517 The Intel(R) Speed Select Technology - Base Frequency (Intel(R) SST-BF) feature lets
524 The support of Intel(R) SST-BF depends on the Intel(R) Speed Select Technology -
534  # intel-speed-select -c 0 perf-profile info -l 0
535  Intel(R) Speed Select Technology
543         speed-select-base-freq:disabled
555 Based on the output of the "intel-speed-select perf-profile info -l 0" base
606  # intel-speed-select base-freq info -l 0
607  Intel(R) Speed Select Technology
612       speed-select-base-freq
636  # intel-speed-select base-freq enable -a
637  Intel(R) Speed Select Technology
651 also adjusts the priority of cores using Intel(R) Speed Select Technology Core
653 Intel(R) Speed Select Technology - Performance Profile (Intel(R) SST-PP) class to
703 # intel-speed-select base-freq disable -a
706 Intel(R) Speed Select Technology - Turbo Frequency (Intel(R) SST-TF)
718 The support of Intel(R) Speed Select Technology - Turbo Frequency (Intel(R) SST-TF)
719 depends on the Intel(R) Speed Select Technology - Performance Profile (Intel
728  # intel-speed-select -c 0 perf-profile info -l 0
729  Intel(R) Speed Select Technology
736         speed-select-turbo-freq:disabled
750  # intel-speed-select perf-profile info -l 0
751  Intel(R) Speed Select Technology
825  # intel-speed-select turbo-freq info -l 0
826  Intel(R) Speed Select Technology
831       speed-select-turbo-freq
847           speed-select-turbo-freq-clip-frequencies
866  # intel-speed-select -c 12,13 turbo-freq enable -a
867  Intel(R) Speed Select Technology
886 feature and also sets the CPUs to high and low priority using Intel Speed