uncore: Allow to configure uncore ELC control #796
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Thank you @spandruvada for addressing the issues in #731, I guess we can close it now. @yarda , do we want to include this in the next FDP? Thanks. |
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LGTM |
yarda
requested changes
Aug 17, 2025
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The CentOS 7 CI failure is unrelated. |
The Efficiency Latency Control (ELC) feature improves performance per watt. With this feature hardware power management algorithms optimize trade-off between latency and power consumption. Add additional configuration for uncore plugin to include attributes to configure ELC. Refer to Intel White Paper Link: Linux kernel documentation: https://docs.kernel.org/admin-guide/pm/intel_uncore_frequency_scaling.html Example configuration: [uncore_all] type=uncore elc_floor_freq_khz=2400000 elc_high_threshold_enable=1 elc_high_threshold_percent=95 elc_low_threshold_percent=10
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Fixed the issue pointed by @yarda . Thanks for review. |
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The Efficiency Latency Control (ELC) feature improves performance per watt. With this feature hardware power management algorithms optimize trade-off between latency and power consumption.
Add additional configuration for uncore plugin to include attributes to configure ELC.
Refer to Intel White Paper
Link:
Linux kernel documentation:
https://docs.kernel.org/admin-guide/pm/intel_uncore_frequency_scaling.html
Example configuration:
[uncore_all]
type=uncore
elc_floor_freq_khz=2400000
elc_high_threshold_enable=1
elc_high_threshold_percent=95
elc_low_threshold_percent=10