Lines Matching +full:assoc +full:- +full:weight
1 .. SPDX-License-Identifier: GPL-2.0
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…
19 dynamically without pre-configuring via BIOS setup options. This dynamic
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/
43 ------------
47 # intel-speed-select --help
49 The top-level help describes arguments and features. Notice that there is a
50 multi-level help structure in the tool. For example, to get help for the feature "perf-profile"::
52 # intel-speed-select perf-profile --help
56 # intel-speed-select perf-profile info --help
59 ------------------------------
62 #intel-speed-select --info
66 # intel-speed-select --info
73 Intel(R) SST-PP (feature perf-profile) is supported
75 Intel(R) SST-TF (feature turbo-freq) is supported
76 Intel(R) SST-BF (feature base-freq) is not supported
77 Intel(R) SST-CP (feature core-power) is supported
79 Intel(R) Speed Select Technology - Performance Profile (Intel(R) SST-PP)
80 ------------------------------------------------------------------------
85 Technology - Performance Profile (Intel(R) SST-PP) feature introduces a mechanism
91 "perf-profile" when using the Intel Speed Select tool.
99 # intel-speed-select perf-profile get-config-levels
102 package-0
103 die-0
104 cpu-0
105 get-config-levels:4
106 package-1
107 die-0
108 cpu-14
109 get-config-levels:4
124 # intel-speed-select perf-profile get-lock-status
127 package-0
128 die-0
129 cpu-0
130 get-lock-status:0
131 package-1
132 die-0
133 cpu-14
134 get-lock-status:0
143 # intel-speed-select perf-profile info -l 0
146 package-0
147 die-0
148 cpu-0
149 perf-profile-level-0
150 cpu-count:28
151 enable-cpu-mask:000003ff,f0003fff
152 enable-cpu-list:0,1,2,3,4,5,6,7,8,9,10,11,12,13,28,29,30,31,32,33,34,35,36,37,38,39,40,41
153 thermal-design-power-ratio:26
154 base-frequency(MHz):2600
155 speed-select-turbo-freq:disabled
156 speed-select-base-freq:disabled
160 Here -l option is used to specify a performance level.
162 If the option -l is omitted, then this command will print information about all
167 "enable-cpu-mask/enable-cpu-list" at the max can be "online." When that
169 understand more, execute "intel-speed-select perf-profile info" for performance
172 # intel-speed-select perf-profile info -l 4
175 package-0
176 die-0
177 cpu-0
178 perf-profile-level-4
179 cpu-count:28
180 enable-cpu-mask:000000fa,f0000faf
181 enable-cpu-list:0,1,2,3,5,7,8,9,10,11,28,29,30,31,33,35,36,37,38,39
182 thermal-design-power-ratio:28
183 base-frequency(MHz):2800
184 speed-select-turbo-freq:disabled
185 speed-select-base-freq:unsupported
189 There are fewer CPUs in the "enable-cpu-mask/enable-cpu-list". Consequently, if
198 # intel-speed-select perf-profile get-config-current-level
201 package-0
202 die-0
203 cpu-0
204 get-config-current_level:0
211 This matches the base-frequency (MHz) field value displayed from the
212 "perf-profile info" command for performance level 0(cpufreq frequency is in
222 #stress -c 64
226 #turbostat -c 0-13 --show Package,Core,CPU,Bzy_MHz -i 1
229 - - 2600
243 # intel-speed-select -d perf-profile set-config-level -l 4 -o
246 package-0
247 die-0
248 cpu-0
249 perf-profile
252 In the command above, "-o" is optional. If it is specified, then it will also
266 ---------------------------------------------
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
271 SST-TF)).
273 For example, from the output of "perf-profile info" above, for level 0 and level
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
293 The Intel(R) SST-BF and the Intel(R) SST-TF features are built on a foundation
294 technology called Intel(R) Speed Select Technology - Core Power (Intel(R) SST-CP).
295 The platform firmware enables this feature when Intel(R) SST-BF or Intel(R) SST-TF
298 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP)
299 ---------------------------------------------------------------
301 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP) is an interface that
321 # intel-speed-select core-power enable --help
324 Enable core-power for a package/die
325 Clos Enable: Specify priority type with [--priority|-p]
330 - Ordered
338 - Proportional
344 weight. This proportional priority can be configured using "core-power config"
349 # intel-speed-select core-power enable
352 package-0
353 die-0
354 cpu-0
355 core-power
357 package-1
358 die-0
359 cpu-6
360 core-power
364 multiple dies. To check if CLOS is enabled and get priority type, "core-power
365 info" command can be used. For example to check the status of core-power feature
368 # intel-speed-select -c 0 core-power info
371 package-0
372 die-0
373 cpu-0
374 core-power
375 support-status:supported
376 enable-status:enabled
377 clos-enable-status:enabled
378 priority-type:proportional
379 package-1
380 die-0
381 cpu-24
382 core-power
383 support-status:supported
384 enable-status:enabled
385 clos-enable-status:enabled
386 priority-type:proportional
392 desired. These parameters can be configured with "core-power config" command.
394 mandatory. To check core-power config options, execute::
396 # intel-speed-select core-power config --help
399 Set core-power configuration for one of the four clos ids
400 Specify targeted clos id with [--clos|-c]
401 Specify clos Proportional Priority [--weight|-w]
402 Specify clos min in MHz with [--min|-n]
403 Specify clos max in MHz with [--max|-m]
407 # intel-speed-select core-power config -c 0
411 clos frequency weight is not specified, default: 0
415 package-0
416 die-0
417 cpu-0
418 core-power
420 package-1
421 die-0
422 cpu-6
423 core-power
432 To check the current configuration, "core-power get-config" can be used. For
435 # intel-speed-select core-power get-config -c 0
438 package-0
439 die-0
440 cpu-0
441 core-power
444 clos-proportional-priority:0
445 clos-min:0 MHz
446 clos-max:Max Turbo frequency
447 clos-desired:0 MHz
448 package-1
449 die-0
450 cpu-24
451 core-power
454 clos-proportional-priority:0
455 clos-min:0 MHz
456 clos-max:Max Turbo frequency
457 clos-desired:0 MHz
462 To associate a CPU to a CLOS group "core-power assoc" command can be used::
464 # intel-speed-select core-power assoc --help
468 Specify targeted clos id with [--clos|-c]
473 # intel-speed-select -c 10 core-power assoc -c 3
476 package-0
477 die-0
478 cpu-10
479 core-power
480 assoc:success
486 To check the existing association for a CPU, "core-power get-assoc" command can
489 # intel-speed-select -c 10 core-power get-assoc
492 package-1
493 die-0
494 cpu-10
495 get-assoc
506 # intel-speed-select core-power disable
508 Some features like Intel(R) SST-TF can only be enabled when CLOS based prioritization
509 is enabled. For this reason, disabling while Intel(R) SST-TF is enabled can cause
510 Intel(R) SST-TF to fail. This will cause the "disable" command to display an error
511 if Intel(R) SST-TF is already enabled. In turn, to disable, the Intel(R) SST-TF
514 Intel(R) Speed Select Technology - Base Frequency (Intel(R) SST-BF)
515 -------------------------------------------------------------------
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 -
525 Performance Profile (Intel(R) SST-PP) performance level configuration. It is
526 possible that only certain performance levels support Intel(R) SST-BF. It is also
528 SST-BF. Consequently, first select the desired performance level to enable this
531 In the system under test here, Intel(R) SST-BF is supported at the base
534 # intel-speed-select -c 0 perf-profile info -l 0
537 package-0
538 die-0
539 cpu-0
540 perf-profile-level-0
543 speed-select-base-freq:disabled
546 Before enabling Intel(R) SST-BF and measuring its impact on a workload
555 Based on the output of the "intel-speed-select perf-profile info -l 0" base
562 To compare, pick a multi-threaded workload where each thread can be scheduled on
564 performance using Intel(R) SST-BF.
569 # taskset -c 3,4 perf bench -r 100 sched pipe
580 #turbostat -c 0-13 --show Package,Core,CPU,Bzy_MHz -i 1
600 Intel(R) SST-BF Capabilities
603 To get capabilities of Intel(R) SST-BF for the current performance level 0,
606 # intel-speed-select base-freq info -l 0
609 package-0
610 die-0
611 cpu-0
612 speed-select-base-freq
613 high-priority-base-frequency(MHz):3000
614 high-priority-cpu-mask:00000216,00002160
615 high-priority-cpu-list:5,6,8,13,33,34,36,41
616 low-priority-base-frequency(MHz):2400
617 tjunction-temperature(C):125
618 thermal-design-power(W):205
623 via high-priority-cpu-list/high-priority-cpu-mask. But if this Intel(R) SST-BF
625 high-priority-cpu-list) can only offer up to 2400 MHz. As a result, if this
627 SST-BF feature particularly for the above "sched pipe" workload since only two
631 Enable Intel(R) SST-BF
634 To enable Intel(R) SST-BF feature, execute::
636 # intel-speed-select base-freq enable -a
639 package-0
640 die-0
641 cpu-0
642 base-freq
644 package-1
645 die-0
646 cpu-14
647 base-freq
650 In this case, -a option is optional. This not only enables Intel(R) SST-BF, but it
652 Power (Intel(R) SST-CP) features. This option sets the minimum performance of each
653 Intel(R) Speed Select Technology - Performance Profile (Intel(R) SST-PP) class to
657 If -a option is not used, then the following steps are required before enabling
658 Intel(R) SST-BF:
660 - Discover Intel(R) SST-BF and note low and high priority base frequency
661 - Note the high prioity CPU list
662 - Enable CLOS using core-power feature set
663 - Configure CLOS parameters. Use CLOS.min to set to minimum performance
664 - Subscribe desired CPUs to CLOS groups
669 #taskset -c 5,6 perf bench -r 100 sched pipe
676 This way, by enabling Intel(R) SST-BF, the performance of this benchmark is
681 #turbostat -c 0-13 --show Package,Core,CPU,Bzy_MHz -i 1
698 Disable Intel(R) SST-BF
701 To disable the Intel(R) SST-BF feature, execute::
703 # intel-speed-select base-freq disable -a
706 Intel(R) Speed Select Technology - Turbo Frequency (Intel(R) SST-TF)
707 --------------------------------------------------------------------
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
720 SST-PP) performance level configuration. It is possible that only a certain
721 performance level supports Intel(R) SST-TF. It is also possible that only the base
722 performance level (level = 0) has the support of Intel(R) SST-TF. Hence, first
725 In the system under test here, Intel(R) SST-TF is supported at the base
728 # intel-speed-select -c 0 perf-profile info -l 0
730 package-0
731 die-0
732 cpu-0
733 perf-profile-level-0
736 speed-select-turbo-freq:disabled
741 To check if performance can be improved using Intel(R) SST-TF feature, get the turbo
742 frequency properties with Intel(R) SST-TF enabled and compare to the base turbo
750 # intel-speed-select perf-profile info -l 0
753 package-0
754 die-0
755 cpu-0
756 perf-profile-level-0
759 turbo-ratio-limits-sse
760 bucket-0
761 core-count:2
762 max-turbo-frequency(MHz):3200
763 bucket-1
764 core-count:4
765 max-turbo-frequency(MHz):3100
766 bucket-2
767 core-count:6
768 max-turbo-frequency(MHz):3100
769 bucket-3
770 core-count:8
771 max-turbo-frequency(MHz):3100
772 bucket-4
773 core-count:10
774 max-turbo-frequency(MHz):3100
775 bucket-5
776 core-count:12
777 max-turbo-frequency(MHz):3100
778 bucket-6
779 core-count:14
780 max-turbo-frequency(MHz):3100
781 bucket-7
782 core-count:16
783 max-turbo-frequency(MHz):3100
786 MHz can be achieved. If there is some busy workload on cpu 0 - 11 (e.g. stress)
789 # taskset -c 12,13 perf bench -r 100 sched pipe
798 #turbostat -c 0-13 --show Package,Core,CPU,Bzy_MHz -i 1
817 13, first check the capability of the Intel(R) SST-TF feature for this performance
820 Get Intel(R) SST-TF Capability
823 To get the capability, the "turbo-freq info" command can be used::
825 # intel-speed-select turbo-freq info -l 0
828 package-0
829 die-0
830 cpu-0
831 speed-select-turbo-freq
832 bucket-0
833 high-priority-cores-count:2
834 high-priority-max-frequency(MHz):3200
835 high-priority-max-avx2-frequency(MHz):3200
836 high-priority-max-avx512-frequency(MHz):3100
837 bucket-1
838 high-priority-cores-count:4
839 high-priority-max-frequency(MHz):3100
840 high-priority-max-avx2-frequency(MHz):3000
841 high-priority-max-avx512-frequency(MHz):2900
842 bucket-2
843 high-priority-cores-count:6
844 high-priority-max-frequency(MHz):3100
845 high-priority-max-avx2-frequency(MHz):3000
846 high-priority-max-avx512-frequency(MHz):2900
847 speed-select-turbo-freq-clip-frequencies
848 low-priority-max-frequency(MHz):2600
849 low-priority-max-avx2-frequency(MHz):2400
850 low-priority-max-avx512-frequency(MHz):2100
852 Based on the output above, there is an Intel(R) SST-TF bucket for which there are
861 Enable Intel(R) SST-TF
864 To enable Intel(R) SST-TF, execute::
866 # intel-speed-select -c 12,13 turbo-freq enable -a
869 package-0
870 die-0
871 cpu-12
872 turbo-freq
874 package-0
875 die-0
876 cpu-13
877 turbo-freq
879 package--1
880 die-0
881 cpu-63
882 turbo-freq --auto
885 In this case, the option "-a" is optional. If set, it enables Intel(R) SST-TF
887 Select Technology Core Power (Intel(R) SST-CP) features. The CPU numbers passed
888 with "-c" arguments are marked as high priority, including its siblings.
890 If -a option is not used, then the following steps are required before enabling
891 Intel(R) SST-TF:
893 - Discover Intel(R) SST-TF and note buckets of high priority cores and maximum frequency
895 - Enable CLOS using core-power feature set - Configure CLOS parameters
897 - Subscribe desired CPUs to CLOS groups making sure that high priority cores are set to the maximum…
902 #taskset -c 12,13 perf bench -r 100 sched pipe
913 #turbostat -c 0-13 --show Package,Core,CPU,Bzy_MHz -i 1