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app/testpmd: enable empty polls in burst stats

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The number of empty polls provides information about available
CPU head room in the presence of continuous polling.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
Tested-by: Phil Yang <phil.yang@arm.com>
Tested-by: Ali Alnubani <alialnu@mellanox.com>
This commit is contained in:
Honnappa Nagarahalli 2020-07-06 18:32:31 -05:00 committed by Ferruh Yigit
parent 85de481a71
commit 7569b8c19b
7 changed files with 62 additions and 50 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
app/test-pmd/csumonly.c
View file

@ -802,11 +802,12 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
/* receive a burst of packet */
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
if (unlikely(nb_rx == 0))
return;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
rx_bad_ip_csum = 0;
rx_bad_l4_csum = 0;

6
app/test-pmd/icmpecho.c
View file

@ -308,12 +308,12 @@ reply_to_icmp_echo_rqsts(struct fwd_stream *fs)
*/
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
if (unlikely(nb_rx == 0))
return;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
nb_replies = 0;
for (i = 0; i < nb_rx; i++) {

6
app/test-pmd/iofwd.c
View file

@ -66,13 +66,13 @@ pkt_burst_io_forward(struct fwd_stream *fs)
*/
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue,
pkts_burst, nb_pkt_per_burst);
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
pkts_burst, nb_rx);
/*

6
app/test-pmd/macfwd.c
View file

@ -71,12 +71,12 @@ pkt_burst_mac_forward(struct fwd_stream *fs)
*/
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
if (unlikely(nb_rx == 0))
return;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
txp = &ports[fs->tx_port];
tx_offloads = txp->dev_conf.txmode.offloads;

6
app/test-pmd/macswap.c
View file

@ -72,12 +72,12 @@ pkt_burst_mac_swap(struct fwd_stream *fs)
*/
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
if (unlikely(nb_rx == 0))
return;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
txp = &ports[fs->tx_port];

6
app/test-pmd/rxonly.c
View file

@ -63,12 +63,12 @@ pkt_burst_receive(struct fwd_stream *fs)
*/
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
if (unlikely(nb_rx == 0))
return;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
#endif
if (unlikely(nb_rx == 0))
return;
fs->rx_packets += nb_rx;
for (i = 0; i < nb_rx; i++)
rte_pktmbuf_free(pkts_burst[i]);

77
app/test-pmd/testpmd.c
View file

@ -1692,57 +1692,68 @@ init_fwd_streams(void)
static void
pkt_burst_stats_display(const char *rx_tx, struct pkt_burst_stats *pbs)
{
uint64_t total_burst;
uint64_t total_burst, sburst;
uint64_t nb_burst;
uint64_t burst_stats[3];
uint16_t pktnb_stats[3];
uint64_t burst_stats[4];
uint16_t pktnb_stats[4];
uint16_t nb_pkt;
int burst_percent[3];
int burst_percent[4], sburstp;
int i;
/*
* First compute the total number of packet bursts and the
* two highest numbers of bursts of the same number of packets.
*/
total_burst = 0;
burst_stats[0] = burst_stats[1] = burst_stats[2] = 0;
pktnb_stats[0] = pktnb_stats[1] = pktnb_stats[2] = 0;
for (nb_pkt = 0; nb_pkt < MAX_PKT_BURST; nb_pkt++) {
memset(&burst_stats, 0x0, sizeof(burst_stats));
memset(&pktnb_stats, 0x0, sizeof(pktnb_stats));
/* Show stats for 0 burst size always */
total_burst = pbs->pkt_burst_spread[0];
burst_stats[0] = pbs->pkt_burst_spread[0];
pktnb_stats[0] = 0;
/* Find the next 2 burst sizes with highest occurrences. */
for (nb_pkt = 1; nb_pkt < MAX_PKT_BURST; nb_pkt++) {
nb_burst = pbs->pkt_burst_spread[nb_pkt];
if (nb_burst == 0)
continue;
total_burst += nb_burst;
if (nb_burst > burst_stats[0]) {
burst_stats[1] = burst_stats[0];
pktnb_stats[1] = pktnb_stats[0];
burst_stats[0] = nb_burst;
pktnb_stats[0] = nb_pkt;
} else if (nb_burst > burst_stats[1]) {
if (nb_burst > burst_stats[1]) {
burst_stats[2] = burst_stats[1];
pktnb_stats[2] = pktnb_stats[1];
burst_stats[1] = nb_burst;
pktnb_stats[1] = nb_pkt;
} else if (nb_burst > burst_stats[2]) {
burst_stats[2] = nb_burst;
pktnb_stats[2] = nb_pkt;
}
}
if (total_burst == 0)
return;
burst_percent[0] = (double)burst_stats[0] / total_burst * 100;
printf(" %s-bursts : %"PRIu64" [%d%% of %d pkts", rx_tx, total_burst,
burst_percent[0], (int) pktnb_stats[0]);
if (burst_stats[0] == total_burst) {
printf("]\n");
return;
printf(" %s-bursts : %"PRIu64" [", rx_tx, total_burst);
for (i = 0, sburst = 0, sburstp = 0; i < 4; i++) {
if (i == 3) {
printf("%d%% of other]\n", 100 - sburstp);
return;
}
sburst += burst_stats[i];
if (sburst == total_burst) {
printf("%d%% of %d pkts]\n",
100 - sburstp, (int) pktnb_stats[i]);
return;
}
burst_percent[i] =
(double)burst_stats[i] / total_burst * 100;
printf("%d%% of %d pkts + ",
burst_percent[i], (int) pktnb_stats[i]);
sburstp += burst_percent[i];
}
if (burst_stats[0] + burst_stats[1] == total_burst) {
printf(" + %d%% of %d pkts]\n",
100 - burst_percent[0], pktnb_stats[1]);
return;
}
burst_percent[1] = (double)burst_stats[1] / total_burst * 100;
burst_percent[2] = 100 - (burst_percent[0] + burst_percent[1]);
if ((burst_percent[1] == 0) || (burst_percent[2] == 0)) {
printf(" + %d%% of others]\n", 100 - burst_percent[0]);
return;
}
printf(" + %d%% of %d pkts + %d%% of others]\n",
burst_percent[1], (int) pktnb_stats[1], burst_percent[2]);
}
#endif /* RTE_TEST_PMD_RECORD_BURST_STATS */