Current pmd_perf_autotest() in continuous mode tries
to enqueue MAX_TRAFFIC_BURST completely before starting
the test. Some drivers cannot accept complete
MAX_TRAFFIC_BURST even though rx+tx desc count can fit it.
This patch changes behaviour to stop enqueuing after few
retries.
Fixes: 002ade70e933 ("app/test: measure cycles per packet in Rx/Tx")
Cc: sta...@dpdk.org
Signed-off-by: Rakesh Kudurumalla <rkuduruma...@marvell.com>
---
v2:
- Fixed commit message errors
app/test/test_pmd_perf.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c
index 3a248d512c..0a95b408e8 100644
--- a/app/test/test_pmd_perf.c
+++ b/app/test/test_pmd_perf.c
@@ -456,6 +456,7 @@ main_loop(__rte_unused void *args)
#define PACKET_SIZE 64
#define FRAME_GAP 12
#define MAC_PREAMBLE 8
+#define MAX_RETRY_COUNT 5
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
unsigned lcore_id;
unsigned i, portid, nb_rx = 0, nb_tx = 0;
@@ -463,6 +464,8 @@ main_loop(__rte_unused void *args)
int pkt_per_port;
uint64_t diff_tsc;
uint64_t packets_per_second, total_packets;
+ int retry_cnt = 0;
+ int free_pkt = 0;
lcore_id = rte_lcore_id();
conf = &lcore_conf[lcore_id];
@@ -480,10 +483,19 @@ main_loop(__rte_unused void *args)
nb_tx = RTE_MIN(MAX_PKT_BURST, num);
nb_tx = rte_eth_tx_burst(portid, 0,
&tx_burst[idx], nb_tx);
+ if (nb_tx == 0)
+ retry_cnt++;
num -= nb_tx;
idx += nb_tx;
+ if (retry_cnt == MAX_RETRY_COUNT) {
+ retry_cnt = 0;
+ break;
+ }
}
}
+ for (free_pkt = idx; free_pkt < (MAX_TRAFFIC_BURST*conf->nb_ports)
+ ; free_pkt++)
+ rte_pktmbuf_free(tx_burst[free_pkt]);
printf("Total packets inject to prime ports = %u\n", idx);
packets_per_second = (link_mbps * 1000 * 1000) /
--
2.25.1
