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author | 2024-05-14 15:07:58 +0200 | |
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committer | 2024-05-14 15:07:58 +0200 | |
commit | 5f16cc6cde29073d125393cdea610de44a073c8f (patch) | |
tree | 9463bb75278493c2d793c114c0cb6274e55ea742 /resources/job_specs/report_coverage/3n-icx/ip4-02.md | |
parent | 04afddb7f238694a7a6680e69981cc43430d4309 (diff) |
feat(CpuUtils): Allow suites to forbid siblings
Some perf suites use a single unidirectional flow of traffic.
On SMT-enabled machines, 1C tests create 2 workers by default.
But if there is only one stream/flow,
only one worker does useful work.
The other worker on the sibling logical core
does busy-wait, which provably lowers the peformance.
Some suites already set smt_used (as a suite variable)
to False for these purposes.
This change edits a lower-level L1 keyword to honor this value,
and adds the suite variable to single stream (and client) hoststack
suites, where the detrimental effect of busy siblings was observed.
Change-Id: I203f1a700d8e6cd84640b9c0b40487cb832908aa
Signed-off-by: Vratko Polak <vrpolak@cisco.com>
Diffstat (limited to 'resources/job_specs/report_coverage/3n-icx/ip4-02.md')
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