From d40a2e46403547fc8d12ee1dacc6484eca1fbbeb Mon Sep 17 00:00:00 2001 From: jiangheng Date: Fri, 5 Jan 2024 10:15:22 +0800 Subject: [PATCH] fix dpdk_alloc_pktmbuf time-consuming --- src/lstack/core/lstack_dpdk.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/lstack/core/lstack_dpdk.c b/src/lstack/core/lstack_dpdk.c index 729a84c..3182bb5 100644 --- a/src/lstack/core/lstack_dpdk.c +++ b/src/lstack/core/lstack_dpdk.c @@ -271,9 +271,14 @@ int32_t create_shared_ring(struct protocol_stack *stack) int32_t dpdk_alloc_pktmbuf(struct rte_mempool *pool, struct rte_mbuf **mbufs, uint32_t num) { - if (rte_mempool_avail_count(pool) < MBUFPOOL_RESERVE_NUM + num) { + /* + * don't use rte_mempool_avail_count, it traverse cpu local cache, + * when RTE_MAX_LCORE is too large, it's time-consuming + */ + if (rte_ring_count(pool->pool_data) < MBUFPOOL_RESERVE_NUM + num) { return -ENOMEM; } + int32_t ret = rte_pktmbuf_alloc_bulk(pool, mbufs, num); if (ret != 0) { LSTACK_LOG(ERR, LSTACK, "rte_pktmbuf_alloc_bulk fail allocNum=%d, ret=%d, info:%s \n", -- 2.33.0