diff options
| author |   Vratko Polak <vrpolak@cisco.com> | 2024-05-14 15:07:58 +0200 |
|---|---|---|
| committer | Vratko Polak <vrpolak@cisco.com> | 2024-05-14 15:07:58 +0200 |
| commit | 5f16cc6cde29073d125393cdea610de44a073c8f (patch) | |
| tree | 9463bb75278493c2d793c114c0cb6274e55ea742 /fdio.infra.ansible | |
| 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 'fdio.infra.ansible')
0 files changed, 0 insertions, 0 deletions