int rte_mempool_get(struct rte_mempool *mp, void **obj_table, unsigned n) { #if RTE_MEMPOOL_CACHE_MAX_SIZE > 0 //从当前cpu应用层缓冲区中获取 cache = &mp->local_cache[lcore_id]; cache_objs = cache->objs; for (index = 0, len = cache->len - 1; index < n; ++index, len-...
int rte_mempool_get(struct rte_mempool *mp, void **obj_table, unsigned n) { #if RTE_MEMPOOL_CACHE_MAX_SIZE > 0 //从当前cpu应用层缓冲区中获取 cache = &mp->local_cache[lcore_id]; cache_objs = cache->objs; for (index = 0, len = cache->len - 1; index < n; ++index, len-...
mempool由三部分构成:rte_mempool结构体、RTE_MAX_LCORE个struct rte_mempool_cache结构体(每个核预留一个本地cache)和pktmbuf pool私有结构struct rte_pktmbuf_pool_private。 如果用户创建mempool时,传入的cache size为0,则mempool无每个core的本地cache部分 rte_pktmbuf_pool_private结构则记录了mempool中mbuf中的m...
- malloc_heap_alloc():将传入的需要malloc的空间大小和align按照CACHE_LINE_SIZE做了对齐。 size = CACHE_LINE_ROUNDUP(size); align = CACHE_LINE_ROUNDUP(align); 1. 2. 在rte_config.mem_config->malloc_heaps[]数组里,此socket对应的堆中,进行匹配,查找是否有合适内存可以分配。find_suitable_element()...
“mbuf_pool”:创建的rte_mempool的名称。 NB_MBUF:rte_mempool包含的rte_mbuf元素的个数。 MBUF_SIZE:每个rte_mbuf元素的大小 1#defineRTE_PKTMBUF_HEADROOM 1282#defineMBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)3#defineNB_MBUF 8192 ...
(1)rte_mempool所缓存的元素会做相应的对齐处理(参考rte_mempool_calc_obj_size) (2)rte_mempool是绑定NUMA的,跨NUMA访问会牺牲一定的性能。 (3)cpu_local缓存采用堆栈式管理,从后往前分配,从前往后释放。 /** Allocate memory on default heap.*/void*rte_malloc(constchar*type, size_t size, unsigned ali...
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*/ static inline void rte_mbuf_prefetch_part2(struct rte_mbuf *m) { #if RTE_CACHE_LINE_SIZE == 64 rte_prefetch0(&m->cacheline1); #else RTE_SET_USED(m); #endif } static inline uint16_t rte_pktmbuf_priv_size(struct rte_mempool *mp); /** * Get the IOVA address of the ...
testpmd: create a new mbuf pool <mbuf_pool_socket_1>: n=203456, size=2176, socket=1 testpmd: preferred mempool ops selected: ring_mp_mc Configuring Port 0 (socket 0) Port 0: 50:6B:4B:DB:FE:0A Configuring Port 1 (socket 0)
app.msg_pool = rte_mempool_create("mempool msg", app.msg_pool_size, app.msg_pool_buffer_size, app.msg_pool_cache_size,0,NULL,NULL, rte_ctrlmbuf_init,NULL, rte_socket_id(),0);if(app.msg_pool ==NULL)rte_panic("Cannot create message pool\n"); ...