[dpdk-dev] [PATCH] vdpa/mlx5: fix polling threads scheduling
thomas at monjalon.net
Wed Feb 10 22:17:53 CET 2021
> >> When the event mode is with 0 fixed delay, the polling-thread will
> >> never give-up CPU.
> >> So, when multi-polling-threads are active, the context-switch between
> >> them will be managed by the system which may affect latency according
> >> to the time-out decided by the system.
> >> In order to fix multi-devices polling thread scheduling, this patch
> >> forces rescheduling for each CQ poll iteration.
> >> Move the polling thread to SCHED_RR mode with maximum priority to
> >> complete the fairness.
> >> Fixes: 6956a48cabbb ("vdpa/mlx5: set polling mode default delay to
> >> zero")
> >> Signed-off-by: Matan Azrad <matan at nvidia.com>
> > Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> Acked-by: Xueming Li <xuemingl at mellanox.com>
converted to nvidia.com
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