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[dpdk-dev] mlx5: fix RETA table size

Message ID 1459351639-18375-1-git-send-email-yaacovh@mellanox.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Yaacov Hazan March 30, 2016, 3:27 p.m. UTC 
  Change RETA table size to use 256 entries for better performance.

Fixes: ebb30ec64a68 ("mlx5: increase RETA table size")

Signed-off-by: Yaacov Hazan <yaacovh@mellanox.com>
---
 drivers/net/mlx5/mlx5_defs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Adrien Mazarguil March 31, 2016, 8:58 a.m. UTC | #1 
Yaacov,

On Wed, Mar 30, 2016 at 06:27:19PM +0300, Yaacov Hazan wrote:
> Change RETA table size to use 256 entries for better performance.
> 
> Fixes: ebb30ec64a68 ("mlx5: increase RETA table size")
> 
> Signed-off-by: Yaacov Hazan <yaacovh@mellanox.com>
> ---
>  drivers/net/mlx5/mlx5_defs.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h
> index 195440c..09207d9 100644
> --- a/drivers/net/mlx5/mlx5_defs.h
> +++ b/drivers/net/mlx5/mlx5_defs.h
> @@ -52,7 +52,7 @@
>  #define MLX5_PMD_TX_PER_COMP_REQ 64
>  
>  /* RSS Indirection table size. */
> -#define RSS_INDIRECTION_TABLE_SIZE 512
> +#define RSS_INDIRECTION_TABLE_SIZE 256

Can you describe how using a smaller indirection table size improves
performance? Thanks.
diff mbox

Patch

diff --git a/drivers/net/mlx5/mlx5_defs.h b/drivers/net/mlx5/mlx5_defs.h
index 195440c..09207d9 100644
--- a/drivers/net/mlx5/mlx5_defs.h
+++ b/drivers/net/mlx5/mlx5_defs.h
@@ -52,7 +52,7 @@ 
 #define MLX5_PMD_TX_PER_COMP_REQ 64
 
 /* RSS Indirection table size. */
-#define RSS_INDIRECTION_TABLE_SIZE 512
+#define RSS_INDIRECTION_TABLE_SIZE 256
 
 /* Maximum number of Scatter/Gather Elements per Work Request. */
 #ifndef MLX5_PMD_SGE_WR_N