Detect of the Intel SST-BF (Speed Select Technology - Base Frequency)
has been enabled.
Adds one new feature label:
feature.node.kubernetes.io/cpu-power.sst_bf.enabled=true
Based on a patch from kuralamudhan.ramakrishnan@intel.com
Currently, it only detects one feature, i.e. hardware multithreading
(such as Intel hyper-threading technology). The corresponding feature
label is:
feature.node.kubernetes.io/cpu-hardware_multithreading=true
However, this (architecture/platform dependent) feature is not detected
directly, and, the heuristics can be mislead. Detection works by
checking the thread siblings of each logical (and online) cpu in the
system. If any cpu has any thread siblings the feature label is set to
true. Thus, hardware multithreading could be effectively disabled e.g.
by putting all sibling cpus offline (even if the technology would be
enabled in hardware).
