From: Matan Azrad <matan@nvidia.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: <dev@dpdk.org>
Subject: [PATCH] doc: improve event core description in vDPA mlx5
Date: Sun, 13 Nov 2022 11:21:37 +0200 [thread overview]
Message-ID: <20221113092137.1252803-1-matan@nvidia.com> (raw)
The event core is mlx5 vDPA driver devarg that selects the CPU core for
the internal timer thread used to manage data-path events into the
driver.
Emphasize that this CPU should be isolated for vDPA mlx5 devices only in
order to save the performance and latency of the device.
Signed-off-by: Matan Azrad <matan@nvidia.com>
---
doc/guides/vdpadevs/mlx5.rst | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/doc/guides/vdpadevs/mlx5.rst b/doc/guides/vdpadevs/mlx5.rst
index 9767fbe42d..3b5ce6df38 100644
--- a/doc/guides/vdpadevs/mlx5.rst
+++ b/doc/guides/vdpadevs/mlx5.rst
@@ -86,8 +86,13 @@ for an additional list of options shared with other mlx5 drivers.
- ``event_core`` parameter [int]
- CPU core number to set polling thread affinity to, default to control plane
- cpu.
+ The CPU core number of the timer thread, default: EAL main lcore.
+
+.. note::
+
+ This core can be shared among different mlx5 vDPA devices as `event_core` but
+ using it also for other tasks may affect the performance and the latency of the
+ mlx5 vDPA devices.
- ``max_conf_threads`` parameter [int]
--
2.25.1
next reply other threads:[~2022-11-13 9:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-13 9:21 Matan Azrad [this message]
2022-11-21 1:38 ` Xia, Chenbo
2022-11-21 19:50 ` Thomas Monjalon
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