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dpdk: High speed PMD physical NIC queue size

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Large TX and RX queues are needed for high speed 10 GbE physical NICS.
Observed a 250% zero loss improvement over small NIC queue test for
port to port flow test.

Signed-off-by: Mike A. Polehn <mike.a.polehn@intel.com>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
This commit is contained in:
Polehn, Mike A
2014-06-19 22:58:26 +00:00
committed by Pravin B Shelar
parent c81f359b1d
commit 79f5354c4c
1 changed files with 5 additions and 2 deletions
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7
lib/netdev-dpdk.c
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@@ -71,6 +71,9 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
#define NON_PMD_THREAD_TX_QUEUE 0 #define NON_PMD_THREAD_TX_QUEUE 0
#define NIC_PORT_RX_Q_SIZE 2048 /* Size of Physical NIC RX Queue, Max (n+32<=4096)*/
#define NIC_PORT_TX_Q_SIZE 2048 /* Size of Physical NIC TX Queue, Max (n+32<=4096)*/
/* TODO: Needs per NIC value for these constants. */ /* TODO: Needs per NIC value for these constants. */
#define RX_PTHRESH 32 /* Default values of RX prefetch threshold reg. */ #define RX_PTHRESH 32 /* Default values of RX prefetch threshold reg. */
#define RX_HTHRESH 32 /* Default values of RX host threshold reg. */ #define RX_HTHRESH 32 /* Default values of RX host threshold reg. */
@@ -372,7 +375,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev) OVS_REQUIRES(dpdk_mutex)
} }
for (i = 0; i < NR_QUEUE; i++) { for (i = 0; i < NR_QUEUE; i++) {
diag = rte_eth_tx_queue_setup(dev->port_id, i, MAX_TX_QUEUE_LEN, diag = rte_eth_tx_queue_setup(dev->port_id, i, NIC_PORT_TX_Q_SIZE,
dev->socket_id, &tx_conf); dev->socket_id, &tx_conf);
if (diag) { if (diag) {
VLOG_ERR("eth dev tx queue setup error %d",diag); VLOG_ERR("eth dev tx queue setup error %d",diag);
@@ -381,7 +384,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev) OVS_REQUIRES(dpdk_mutex)
} }
for (i = 0; i < NR_QUEUE; i++) { for (i = 0; i < NR_QUEUE; i++) {
diag = rte_eth_rx_queue_setup(dev->port_id, i, MAX_RX_QUEUE_LEN, diag = rte_eth_rx_queue_setup(dev->port_id, i, NIC_PORT_RX_Q_SIZE,
dev->socket_id, dev->socket_id,
&rx_conf, dev->dpdk_mp->mp); &rx_conf, dev->dpdk_mp->mp);
if (diag) { if (diag) {