Lines Matching full:intel
4 Intel(R) Speed Select Technology User Guide
7 The Intel(R) Speed Select Technology (Intel(R) SST) provides a powerful new
9 With Intel(R) SST, one server can be configured for power and performance for a
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
24 control Intel(R) SST features. This document gives example commands and explains
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
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)
84 to choose a specific server configuration statically. This Intel(R) Speed Select
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
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
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
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
279 # intel-speed-select --oob
280 Intel(R) Speed Select Technology
287 Check presence of other Intel(R) SST features
291 other two Intel(R) SST features (Intel(R) Speed Select Technology - Base Frequency
292 (Intel(R) SST-BF) and Intel(R) Speed Select Technology - Turbo Frequency (Intel
306 Given these results, the "speed-select-base-freq" (Intel(R) SST-BF) in level 4
312 "speed-select-turbo-freq" (Intel(R) SST-TF) is supported at both performance
315 The Intel(R) SST-BF and the Intel(R) SST-TF features are built on a foundation
316 technology called Intel(R) Speed Select Technology - Core Power (Intel(R) SST-CP).
317 The platform firmware enables this feature when Intel(R) SST-BF or Intel(R) SST-TF
320 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP)
323 Intel(R) Speed Select Technology Core Power (Intel(R) SST-CP) is an interface that
343 # intel-speed-select core-power enable --help
344 Intel(R) Speed Select Technology
371 # intel-speed-select core-power enable
372 Intel(R) Speed Select Technology
390 # intel-speed-select -c 0 core-power info
391 Intel(R) Speed Select Technology
418 # intel-speed-select core-power config --help
419 Intel(R) Speed Select Technology
429 # intel-speed-select core-power config -c 0
430 Intel(R) Speed Select Technology
457 # intel-speed-select core-power get-config -c 0
458 Intel(R) Speed Select Technology
486 # intel-speed-select core-power assoc --help
487 Intel(R) Speed Select Technology
495 # intel-speed-select -c 10 core-power assoc -c 3
496 Intel(R) Speed Select Technology
511 # intel-speed-select -c 10 core-power get-assoc
512 Intel(R) Speed Select Technology
528 # intel-speed-select core-power disable
530 Some features like Intel(R) SST-TF can only be enabled when CLOS based prioritization
531 is enabled. For this reason, disabling while Intel(R) SST-TF is enabled can cause
532 Intel(R) SST-TF to fail. This will cause the "disable" command to display an error
533 if Intel(R) SST-TF is already enabled. In turn, to disable, the Intel(R) SST-TF
536 Intel(R) Speed Select Technology - Base Frequency (Intel(R) SST-BF)
539 The Intel(R) Speed Select Technology - Base Frequency (Intel(R) SST-BF) feature lets
546 The support of Intel(R) SST-BF depends on the Intel(R) Speed Select Technology -
547 Performance Profile (Intel(R) SST-PP) performance level configuration. It is
548 possible that only certain performance levels support Intel(R) SST-BF. It is also
549 possible that only base performance level (level = 0) has support of Intel
553 In the system under test here, Intel(R) SST-BF is supported at the base
556 # intel-speed-select -c 0 perf-profile info -l 0
557 Intel(R) Speed Select Technology
568 Before enabling Intel(R) SST-BF and measuring its impact on a workload
577 Based on the output of the "intel-speed-select perf-profile info -l 0" base
586 performance using Intel(R) SST-BF.
622 Intel(R) SST-BF Capabilities
625 To get capabilities of Intel(R) SST-BF for the current performance level 0,
628 # intel-speed-select base-freq info -l 0
629 Intel(R) Speed Select Technology
645 via high-priority-cpu-list/high-priority-cpu-mask. But if this Intel(R) SST-BF
648 clipping of low priority CPUs is acceptable, then the user can enable Intel
653 Enable Intel(R) SST-BF
656 To enable Intel(R) SST-BF feature, execute::
658 # intel-speed-select base-freq enable -a
659 Intel(R) Speed Select Technology
672 In this case, -a option is optional. This not only enables Intel(R) SST-BF, but it
673 also adjusts the priority of cores using Intel(R) Speed Select Technology Core
674 Power (Intel(R) SST-CP) features. This option sets the minimum performance of each
675 Intel(R) Speed Select Technology - Performance Profile (Intel(R) SST-PP) class to
680 Intel(R) SST-BF:
682 - Discover Intel(R) SST-BF and note low and high priority base frequency
698 This way, by enabling Intel(R) SST-BF, the performance of this benchmark is
720 Disable Intel(R) SST-BF
723 To disable the Intel(R) SST-BF feature, execute::
725 # intel-speed-select base-freq disable -a
728 Intel(R) Speed Select Technology - Turbo Frequency (Intel(R) SST-TF)
740 The support of Intel(R) Speed Select Technology - Turbo Frequency (Intel(R) SST-TF)
741 depends on the Intel(R) Speed Select Technology - Performance Profile (Intel
743 performance level supports Intel(R) SST-TF. It is also possible that only the base
744 performance level (level = 0) has the support of Intel(R) SST-TF. Hence, first
747 In the system under test here, Intel(R) SST-TF is supported at the base
750 # intel-speed-select -c 0 perf-profile info -l 0
751 Intel(R) Speed Select Technology
763 To check if performance can be improved using Intel(R) SST-TF feature, get the turbo
764 frequency properties with Intel(R) SST-TF enabled and compare to the base turbo
772 # intel-speed-select perf-profile info -l 0
773 Intel(R) Speed Select Technology
839 13, first check the capability of the Intel(R) SST-TF feature for this performance
842 Get Intel(R) SST-TF Capability
847 # intel-speed-select turbo-freq info -l 0
848 Intel(R) Speed Select Technology
874 Based on the output above, there is an Intel(R) SST-TF bucket for which there are
883 Enable Intel(R) SST-TF
886 To enable Intel(R) SST-TF, execute::
888 # intel-speed-select -c 12,13 turbo-freq enable -a
889 Intel(R) Speed Select Technology
907 In this case, the option "-a" is optional. If set, it enables Intel(R) SST-TF
908 feature and also sets the CPUs to high and low priority using Intel Speed
909 Select Technology Core Power (Intel(R) SST-CP) features. The CPU numbers passed
913 Intel(R) SST-TF:
915 - Discover Intel(R) SST-TF and note buckets of high priority cores and maximum frequency