When running DPDK in QEMU it cannot determine the connection speed. pmd_perf_autotest treats this as if the connection speed where UNIT32_MAX Mbps:
RTE>>pmd_perf_autotest Start PMD RXTX cycles cost test. Allocated mbuf pool on socket 0 CONFIG RXD=1024 TXD=1024 Performance test runs on lcore 1 socket 0 Port 0 Address:52:54:00:12:34:57 Port 1 Address:52:54:00:12:34:58 Checking link statuses... Port 0 Link up at Unknown FDX Autoneg Port 1 Link up at Unknown FDX Autoneg IPv4 pktlen 46 UDP pktlen 26 Generate 4096 packets @socket 0 inject 2048 packet to port 0 inject 2048 packet to port 1 Total packets inject to prime ports = 4096 Each port will do 6391320379464 packets per second Test will stop after at least 25565281517856 packets received This will not allow the test to terminate in a reasonable timespan. Just assume 10 Gbps in this case instead: ... Test will stop after at least 59523808 packets received Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com> --- app/test/test_pmd_perf.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c index 25611bfe9b..ee08c8aade 100644 --- a/app/test/test_pmd_perf.c +++ b/app/test/test_pmd_perf.c @@ -486,10 +486,17 @@ main_loop(__rte_unused void *args) } printf("Total packets inject to prime ports = %u\n", idx); - packets_per_second = (link_mbps * 1000 * 1000) / - ((PACKET_SIZE + FRAME_GAP + MAC_PREAMBLE) * CHAR_BIT); - printf("Each port will do %"PRIu64" packets per second\n", - packets_per_second); + if (link_mbps != RTE_ETH_SPEED_NUM_UNKNOWN) { + packets_per_second = (link_mbps * 1000 * 1000) / + ((PACKET_SIZE + FRAME_GAP + MAC_PREAMBLE) * CHAR_BIT); + printf("Each port will do %"PRIu64" packets per second\n", + packets_per_second); + total_packets = RTE_TEST_DURATION * conf->nb_ports * packets_per_second; + } else { + /* We don't know the speed. Pretend it is 10G */ + packets_per_second = ((uint64_t)RTE_ETH_SPEED_NUM_10G * 1000 * 1000) / + ((PACKET_SIZE + FRAME_GAP + MAC_PREAMBLE) * CHAR_BIT); + } total_packets = RTE_TEST_DURATION * conf->nb_ports * packets_per_second; printf("Test will stop after at least %"PRIu64" packets received\n", -- 2.34.1