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authorVratko Polak <vrpolak@cisco.com>2024-05-14 15:07:58 +0200
committerVratko Polak <vrpolak@cisco.com>2024-05-14 15:07:58 +0200
commit5f16cc6cde29073d125393cdea610de44a073c8f (patch)
tree9463bb75278493c2d793c114c0cb6274e55ea742 /tests/vpp/perf/hoststack/2n1l-10ge2p1x710-eth-ip4tcphttp-dma-ldpreload-nginx-1_21_5-rps.robot
parent04afddb7f238694a7a6680e69981cc43430d4309 (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>
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