doc: add multi-thread flow rate optimizations for mlx5

This commit adds the multiple-thread flow insertion optimization
description.

Signed-off-by: Suanming Mou <suanmingm@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>

diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index b8b8d97..4d98968 100644 (file)
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -455,6 +455,11 @@ Limitations
   - 256 ports maximum.
   - 4M connections maximum.
 
+- Multi-thread flow insertion:
+
+  - In order to achieve best insertion rate, application should manage the flows per lcore.
+  - Better to disable memory reclaim by setting ``reclaim_mem_mode`` to 0 to accelerate the flow object allocation and release with cache.
+
 Statistics
 ----------
 

diff --git a/doc/guides/rel_notes/release_21_08.rst b/doc/guides/rel_notes/release_21_08.rst
index 8d61c0d..fadaa71 100644 (file)
--- a/doc/guides/rel_notes/release_21_08.rst
+++ b/doc/guides/rel_notes/release_21_08.rst
@@ -89,6 +89,7 @@ New Features
   * Added support for meter hierarchy.
   * Added devargs options ``allow_duplicate_pattern``.
   * Added support for matching on VXLAN header last 8-bits reserved field.
+  * Optimized multi-thread flow rule insertion rate.
 
 * **Added Wangxun ngbe PMD.**