There's a little tip that can be modified, with that modified:
Acked-by: Chengwen Feng <fengcheng...@huawei.com>
On 2024/10/17 17:58, Jie Hai wrote:
> The mempool cache size of mbuf is set to
> RTE_MEMPOOL_CACHE_MAX_SIZE as default. This patch allows
> users to configure the cache size by "--mbcache", and limits
> the parameter to a maximum of RTE_MEMPOOL_CACHE_MAX_SIZE.
>
> Signed-off-by: Jie Hai <haij...@huawei.com>
> Acked-by: Huisong Li <lihuis...@huawei.com>
> Acked-by: Morten Brørup <m...@smartsharesystems.com>
> ---
> examples/l3fwd/l3fwd.h | 1 +
> examples/l3fwd/main.c | 33 ++++++++++++++++++++++++++++++---
> 2 files changed, 31 insertions(+), 3 deletions(-)
>
> diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h
> index 618e0eaa3af1..0cce3406ee7d 100644
> --- a/examples/l3fwd/l3fwd.h
> +++ b/examples/l3fwd/l3fwd.h
> @@ -117,6 +117,7 @@ extern struct acl_algorithms acl_alg[];
> extern uint32_t max_pkt_len;
>
> extern uint32_t nb_pkt_per_burst;
> +extern uint32_t mb_mempool_cache_size;
>
> /* Send burst of packets on an output interface */
> static inline int
> diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
> index 8b7a07cc7d67..d08525faa1a6 100644
> --- a/examples/l3fwd/main.c
> +++ b/examples/l3fwd/main.c
> @@ -58,6 +58,7 @@ static_assert(MEMPOOL_CACHE_SIZE >= MAX_PKT_BURST,
> "MAX_PKT_BURST should be at m
> uint16_t nb_rxd = RX_DESC_DEFAULT;
> uint16_t nb_txd = TX_DESC_DEFAULT;
> uint32_t nb_pkt_per_burst = DEFAULT_PKT_BURST;
> +uint32_t mb_mempool_cache_size = MEMPOOL_CACHE_SIZE;
>
> /**< Ports set in promiscuous mode off by default. */
> static int promiscuous_on;
> @@ -399,6 +400,7 @@ print_usage(const char *prgname)
> " [--rx-queue-size NPKTS]"
> " [--tx-queue-size NPKTS]"
> " [--burst NPKTS]"
> + " [--mbcache CACHESZ]"
> " [--eth-dest=X,MM:MM:MM:MM:MM:MM]"
> " [--max-pkt-len PKTLEN]"
> " [--no-numa]"
> @@ -426,6 +428,8 @@ print_usage(const char *prgname)
> " Default: %d\n"
> " --burst NPKTS: Burst size in decimal\n"
> " Default: %d\n"
> + " --mbcache CACHESZ: Cache size in decimal\n"
Suggest " --mbcache CACHESZ: Mbuf cache size in decimal\n"
> + " Default: %d\n"
> " --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for
> port X\n"
> " --max-pkt-len PKTLEN: maximum packet length in decimal
> (64-9600)\n"
> " --no-numa: Disable numa awareness\n"
> @@ -455,7 +459,7 @@ print_usage(const char *prgname)
> " another is route entry at while line leads
> with character '%c'.\n"
> " --rule_ipv6=FILE: Specify the ipv6 rules entries file.\n"
> " --alg: ACL classify method to use, one of: %s.\n\n",
> - prgname, RX_DESC_DEFAULT, TX_DESC_DEFAULT, DEFAULT_PKT_BURST,
> + prgname, RX_DESC_DEFAULT, TX_DESC_DEFAULT, DEFAULT_PKT_BURST,
> MEMPOOL_CACHE_SIZE,
> ACL_LEAD_CHAR, ROUTE_LEAD_CHAR, alg);
> }
>
> @@ -673,6 +677,22 @@ parse_lookup(const char *optarg)
> return 0;
> }
>
> +static void
> +parse_mbcache_size(const char *optarg)
> +{
> + unsigned long mb_cache_size;
> + char *end = NULL;
> +
> + mb_cache_size = strtoul(optarg, &end, 10);
> + if ((optarg[0] == '\0') || (end == NULL) || (*end != '\0'))
> + return;
> + if (mb_cache_size <= RTE_MEMPOOL_CACHE_MAX_SIZE)
> + mb_mempool_cache_size = (uint32_t)mb_cache_size;
> + else
> + rte_exit(EXIT_FAILURE, "mbcache must be >= 0 and <= %d\n",
> + RTE_MEMPOOL_CACHE_MAX_SIZE);
> +}
> +
> static void
> parse_pkt_burst(const char *optarg)
> {
> @@ -748,6 +768,7 @@ static const char short_options[] =
> #define CMD_LINE_OPT_RULE_IPV6 "rule_ipv6"
> #define CMD_LINE_OPT_ALG "alg"
> #define CMD_LINE_OPT_PKT_BURST "burst"
> +#define CMD_LINE_OPT_MB_CACHE_SIZE "mbcache"
>
> enum {
> /* long options mapped to a short option */
> @@ -777,7 +798,8 @@ enum {
> CMD_LINE_OPT_ENABLE_VECTOR_NUM,
> CMD_LINE_OPT_VECTOR_SIZE_NUM,
> CMD_LINE_OPT_VECTOR_TMO_NS_NUM,
> - CMD_LINE_OPT_PKT_BURST_NUM
> + CMD_LINE_OPT_PKT_BURST_NUM,
> + CMD_LINE_OPT_MB_CACHE_SIZE_NUM
> };
>
> static const struct option lgopts[] = {
> @@ -805,6 +827,7 @@ static const struct option lgopts[] = {
> {CMD_LINE_OPT_RULE_IPV6, 1, 0, CMD_LINE_OPT_RULE_IPV6_NUM},
> {CMD_LINE_OPT_ALG, 1, 0, CMD_LINE_OPT_ALG_NUM},
> {CMD_LINE_OPT_PKT_BURST, 1, 0, CMD_LINE_OPT_PKT_BURST_NUM},
> + {CMD_LINE_OPT_MB_CACHE_SIZE, 1, 0, CMD_LINE_OPT_MB_CACHE_SIZE_NUM},
> {NULL, 0, 0, 0}
> };
>
> @@ -897,6 +920,10 @@ parse_args(int argc, char **argv)
> parse_pkt_burst(optarg);
> break;
>
> + case CMD_LINE_OPT_MB_CACHE_SIZE_NUM:
> + parse_mbcache_size(optarg);
> + break;
> +
> case CMD_LINE_OPT_ETH_DEST_NUM:
> parse_eth_dest(optarg);
> break;
> @@ -1089,7 +1116,7 @@ init_mem(uint16_t portid, unsigned int nb_mbuf)
> portid, socketid);
> pktmbuf_pool[portid][socketid] =
> rte_pktmbuf_pool_create(s, nb_mbuf,
> - MEMPOOL_CACHE_SIZE, 0,
> + mb_mempool_cache_size, 0,
> RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
> if (pktmbuf_pool[portid][socketid] == NULL)
> rte_exit(EXIT_FAILURE,
