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net/mlx5: DR, Lower sync threshold for ICM hot memory

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Instead of hiding the math in the code, define a value that sets the
fraction of allowed hot memory of ICM pool.
Set the threshold for sync of ICM hot chunks to 1/4 of the pool
instead of 1/2 of the pool. Although we will have more syncs, each
sync will be shorter and will help with insertion rate stability.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Yevgeny Kliteynik 2022-05-26 10:27:12 +03:00 committed by Saeed Mahameed
parent fb628b71fb
commit 133ea373a0
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c
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@ -4,6 +4,7 @@
#include "dr_types.h"
#define DR_ICM_MODIFY_HDR_ALIGN_BASE 64
#define DR_ICM_POOL_HOT_MEMORY_FRACTION 4
struct mlx5dr_icm_pool {
enum mlx5dr_icm_type icm_type;
@ -337,10 +338,11 @@ static bool dr_icm_pool_is_sync_required(struct mlx5dr_icm_pool *pool)
{
int allow_hot_size;
/* sync when hot memory reaches half of the pool size */
/* sync when hot memory reaches a certain fraction of the pool size */
allow_hot_size =
mlx5dr_icm_pool_chunk_size_to_byte(pool->max_log_chunk_sz,
pool->icm_type) / 2;
pool->icm_type) /
DR_ICM_POOL_HOT_MEMORY_FRACTION;
return pool->hot_memory_size > allow_hot_size;
}