On Thu, Jun 19, 2014 at 3:58 PM, Polehn, Mike A <[email protected]> wrote:
> 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
> A port to port flow test.
>
> Signed-off-by: Mike A. Polehn <[email protected]>
I am fine with the
>
> diff --git a/lib/netdev-dpdk.c b/lib/netdev-dpdk.c
> index fbdb6b3..d1bcc73 100644
> --- a/lib/netdev-dpdk.c
> +++ b/lib/netdev-dpdk.c
> @@ -70,6 +70,9 @@ static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5,
> 20);
>
> #define NON_PMD_THREAD_TX_QUEUE 0
>
> +#define NIC_PORT_RX_Q_SIZE 2048 /* Size of Physical NIC RX Queue
> (n*32<4096)*/
I am not sure what does "(n*32<4096)" means. Can you elaborate it bit?
> +#define NIC_PORT_TX_Q_SIZE 2048 /* Size of Physical NIC TX Queue
> (n*32<4096)*/
> +
> /* TODO: Needs per NIC value for these constants. */
> #define RX_PTHRESH 32 /* Default values of RX prefetch threshold reg. */
> #define RX_HTHRESH 32 /* Default values of RX host threshold reg. */
> @@ -369,7 +372,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev)
> OVS_REQUIRES(dpdk_mutex)
> }
>
> 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);
> if (diag) {
> VLOG_ERR("eth dev tx queue setup error %d",diag);
> @@ -378,7 +381,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev)
> OVS_REQUIRES(dpdk_mutex)
> }
>
> 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,
> &rx_conf, dev->dpdk_mp->mp);
> if (diag) {
>
>
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