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| author | Dragos Tatulea <dtatulea@nvidia.com> | 2024-08-16 12:01:55 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-09-25 07:07:42 -0400 |
| commit | dcf3eac01f063df0a60ea779399331d2ac535784 (patch) | |
| tree | 1940d51e8daeced91b44db924ec14fb22347b96f /tools/perf/scripts/python/parallel-perf.py | |
| parent | 61674c154bb7f19fad612242022276e8bd9e10d2 (diff) | |
vdpa/mlx5: Parallelize device suspend
Currently device suspend works on vqs serially. Building up on previous
changes that converted vq operations to the async api, this patch
parallelizes the device suspend:
1) Suspend all active vqs parallel.
2) Query suspended vqs in parallel.
For 1 vDPA device x 32 VQs (16 VQPs) attached to a large VM (256 GB RAM,
32 CPUs x 2 threads per core), the device suspend time is reduced from
~37 ms to ~13 ms.
A later patch will remove the link unregister operation which will make
it even faster.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20240816090159.1967650-7-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions