[dpdk-dev] [PATCH v5] app/testpmd: add option ring-bind-lcpu to bind Q with CPU
Ananyev, Konstantin
konstantin.ananyev at intel.com
Tue Jan 16 13:38:35 CET 2018
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of wei.guo.simon at gmail.com
> Sent: Saturday, January 13, 2018 2:35 AM
> To: Lu, Wenzhuo <wenzhuo.lu at intel.com>
> Cc: dev at dpdk.org; Thomas Monjalon <thomas at monjalon.net>; Simon Guo <wei.guo.simon at gmail.com>
> Subject: [dpdk-dev] [PATCH v5] app/testpmd: add option ring-bind-lcpu to bind Q with CPU
>
> From: Simon Guo <wei.guo.simon at gmail.com>
>
> Currently the rx/tx queue is allocated from the buffer pool on socket of:
> - port's socket if --port-numa-config specified
> - or ring-numa-config setting per port
>
> All the above will "bind" queue to single socket per port configuration.
> But it can actually archieve better performance if one port's queue can
> be spread across multiple NUMA nodes, and the rx/tx queue is allocated
> per lcpu socket.
>
> This patch adds a new option "--ring-bind-lcpu"(no parameter). With
> this, testpmd can utilize the PCI-e bus bandwidth on another NUMA
> nodes.
>
> When --port-numa-config or --ring-numa-config option is specified, this
> --ring-bind-lcpu option will be suppressed.
Instead of introducing one more option - wouldn't it be better to
allow user manually to define flows and assign them to particular lcores?
Then the user will be able to create any FWD configuration he/she likes.
Something like:
lcore X add flow rxq N,Y txq M,Z
Which would mean - on lcore X recv packets from port=N, rx_queue=Y,
and send them through port=M,tx_queue=Z.
Konstantin
>
> Test result:
> 64bytes package, running in PowerPC with Mellanox
> CX-4 card, single port(100G), with 8 cores, fw mode:
> - Without this patch: 52.5Mpps throughput
> - With this patch: 66Mpps throughput
> ~25% improvement
>
> Signed-off-by: Simon Guo <wei.guo.simon at gmail.com>
> ---
> app/test-pmd/parameters.c | 14 ++++-
> app/test-pmd/testpmd.c | 112 ++++++++++++++++++++++++----------
> app/test-pmd/testpmd.h | 7 +++
> doc/guides/testpmd_app_ug/run_app.rst | 6 ++
> 4 files changed, 107 insertions(+), 32 deletions(-)
>
> diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
> index 304b98d..1dba92e 100644
> --- a/app/test-pmd/parameters.c
> +++ b/app/test-pmd/parameters.c
> @@ -104,6 +104,10 @@
> "(flag: 1 for RX; 2 for TX; 3 for RX and TX).\n");
> printf(" --socket-num=N: set socket from which all memory is allocated "
> "in NUMA mode.\n");
> + printf(" --ring-bind-lcpu: "
> + "specify TX/RX rings will be allocated on local socket of lcpu."
> + "It will be ignored if ring-numa-config or port-numa-config is used. "
> + "As a result, it allows one port binds to multiple NUMA nodes.\n");
> printf(" --mbuf-size=N: set the data size of mbuf to N bytes.\n");
> printf(" --total-num-mbufs=N: set the number of mbufs to be allocated "
> "in mbuf pools.\n");
> @@ -544,6 +548,7 @@
> { "interactive", 0, 0, 0 },
> { "cmdline-file", 1, 0, 0 },
> { "auto-start", 0, 0, 0 },
> + { "ring-bind-lcpu", 0, 0, 0 },
> { "eth-peers-configfile", 1, 0, 0 },
> { "eth-peer", 1, 0, 0 },
> #endif
> @@ -676,6 +681,10 @@
> stats_period = n;
> break;
> }
> + if (!strcmp(lgopts[opt_idx].name, "ring-bind-lcpu")) {
> + ring_bind_lcpu |= RBL_BIND_LOCAL_MASK;
> + break;
> + }
> if (!strcmp(lgopts[opt_idx].name,
> "eth-peers-configfile")) {
> if (init_peer_eth_addrs(optarg) != 0)
> @@ -739,11 +748,14 @@
> if (parse_portnuma_config(optarg))
> rte_exit(EXIT_FAILURE,
> "invalid port-numa configuration\n");
> + ring_bind_lcpu |= RBL_PORT_NUMA_MASK;
> }
> - if (!strcmp(lgopts[opt_idx].name, "ring-numa-config"))
> + if (!strcmp(lgopts[opt_idx].name, "ring-numa-config")) {
> if (parse_ringnuma_config(optarg))
> rte_exit(EXIT_FAILURE,
> "invalid ring-numa configuration\n");
> + ring_bind_lcpu |= RBL_RING_NUMA_MASK;
> + }
> if (!strcmp(lgopts[opt_idx].name, "socket-num")) {
> n = atoi(optarg);
> if (!new_socket_id((uint8_t)n)) {
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index 9414d0e..e9e89d0 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -68,6 +68,9 @@
> uint8_t interactive = 0;
> uint8_t auto_start = 0;
> uint8_t tx_first;
> +
> +uint8_t ring_bind_lcpu;
> +
> char cmdline_filename[PATH_MAX] = {0};
>
> /*
> @@ -1410,6 +1413,43 @@ static int eth_event_callback(portid_t port_id,
> return 1;
> }
>
> +static int find_local_socket(queueid_t qi, int is_rxq)
> +{
> + /*
> + * try to find the local socket with following logic:
> + * 1) Find the correct stream for the queue;
> + * 2) Find the correct lcore for the stream;
> + * 3) Find the correct socket for the lcore;
> + */
> + int i, j, socket = NUMA_NO_CONFIG;
> +
> + /* find the stream based on queue no*/
> + for (i = 0; i < nb_fwd_streams; i++) {
> + if (is_rxq) {
> + if (fwd_streams[i]->rx_queue == qi)
> + break;
> + } else {
> + if (fwd_streams[i]->tx_queue == qi)
> + break;
> + }
> + }
> + if (i == nb_fwd_streams)
> + return NUMA_NO_CONFIG;
> +
> + /* find the lcore based on stream idx */
> + for (j = 0; j < nb_lcores; j++) {
> + if (fwd_lcores[j]->stream_idx == i)
> + break;
> + }
> + if (j == nb_lcores)
> + return NUMA_NO_CONFIG;
> +
> + /* find the socket for the lcore */
> + socket = rte_lcore_to_socket_id(fwd_lcores_cpuids[j]);
> +
> + return socket;
> +}
> +
> int
> start_port(portid_t pid)
> {
> @@ -1469,14 +1509,18 @@ static int eth_event_callback(portid_t port_id,
> port->need_reconfig_queues = 0;
> /* setup tx queues */
> for (qi = 0; qi < nb_txq; qi++) {
> + int socket = port->socket_id;
> if ((numa_support) &&
> (txring_numa[pi] != NUMA_NO_CONFIG))
> - diag = rte_eth_tx_queue_setup(pi, qi,
> - nb_txd,txring_numa[pi],
> - &(port->tx_conf));
> - else
> - diag = rte_eth_tx_queue_setup(pi, qi,
> - nb_txd,port->socket_id,
> + socket = txring_numa[pi];
> + else if (ring_bind_lcpu) {
> + int ret = find_local_socket(qi, 0);
> + if (ret != NUMA_NO_CONFIG)
> + socket = ret;
> + }
> +
> + diag = rte_eth_tx_queue_setup(pi, qi,
> + nb_txd, socket,
> &(port->tx_conf));
>
> if (diag == 0)
> @@ -1495,35 +1539,28 @@ static int eth_event_callback(portid_t port_id,
> }
> /* setup rx queues */
> for (qi = 0; qi < nb_rxq; qi++) {
> + int socket = port->socket_id;
> if ((numa_support) &&
> - (rxring_numa[pi] != NUMA_NO_CONFIG)) {
> - struct rte_mempool * mp =
> - mbuf_pool_find(rxring_numa[pi]);
> - if (mp == NULL) {
> - printf("Failed to setup RX queue:"
> - "No mempool allocation"
> - " on the socket %d\n",
> - rxring_numa[pi]);
> - return -1;
> - }
> -
> - diag = rte_eth_rx_queue_setup(pi, qi,
> - nb_rxd,rxring_numa[pi],
> - &(port->rx_conf),mp);
> - } else {
> - struct rte_mempool *mp =
> - mbuf_pool_find(port->socket_id);
> - if (mp == NULL) {
> - printf("Failed to setup RX queue:"
> + (rxring_numa[pi] != NUMA_NO_CONFIG))
> + socket = rxring_numa[pi];
> + else if (ring_bind_lcpu) {
> + int ret = find_local_socket(qi, 1);
> + if (ret != NUMA_NO_CONFIG)
> + socket = ret;
> + }
> +
> + struct rte_mempool *mp =
> + mbuf_pool_find(socket);
> + if (mp == NULL) {
> + printf("Failed to setup RX queue:"
> "No mempool allocation"
> " on the socket %d\n",
> - port->socket_id);
> - return -1;
> - }
> - diag = rte_eth_rx_queue_setup(pi, qi,
> - nb_rxd,port->socket_id,
> - &(port->rx_conf), mp);
> + socket);
> + return -1;
> }
> + diag = rte_eth_rx_queue_setup(pi, qi,
> + nb_rxd, socket,
> + &(port->rx_conf), mp);
> if (diag == 0)
> continue;
>
> @@ -2414,6 +2451,19 @@ uint8_t port_is_bonding_slave(portid_t slave_pid)
> "but nb_txq=%d will prevent to fully test it.\n",
> nb_rxq, nb_txq);
>
> + if (ring_bind_lcpu & RBL_BIND_LOCAL_MASK) {
> + if (ring_bind_lcpu &
> + (RBL_RING_NUMA_MASK | RBL_PORT_NUMA_MASK)) {
> + printf("ring-bind-lcpu option is suppressed by "
> + "ring-numa-config or port-numa-config option\n");
> + ring_bind_lcpu = 0;
> + } else {
> + printf("RingBuffer bind with local CPU selected\n");
> + ring_bind_lcpu = 1;
> + }
> + } else
> + ring_bind_lcpu = 0;
> +
> init_config();
> if (start_port(RTE_PORT_ALL) != 0)
> rte_exit(EXIT_FAILURE, "Start ports failed\n");
> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
> index 2a266fd..99e55b2 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -328,6 +328,13 @@ struct queue_stats_mappings {
> extern uint8_t interactive;
> extern uint8_t auto_start;
> extern uint8_t tx_first;
> +
> +/* for --ring-bind-lcpu option checking, RBL means Ring Bind Lcpu related */
> +#define RBL_BIND_LOCAL_MASK (1 << 0)
> +#define RBL_RING_NUMA_MASK (1 << 1)
> +#define RBL_PORT_NUMA_MASK (1 << 2)
> +extern uint8_t ring_bind_lcpu;
> +
> extern char cmdline_filename[PATH_MAX]; /**< offline commands file */
> extern uint8_t numa_support; /**< set by "--numa" parameter */
> extern uint16_t port_topology; /**< set by "--port-topology" parameter */
> diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
> index 4c0d2ce..b88f099 100644
> --- a/doc/guides/testpmd_app_ug/run_app.rst
> +++ b/doc/guides/testpmd_app_ug/run_app.rst
> @@ -240,6 +240,12 @@ The commandline options are:
> Specify the socket on which the TX/RX rings for the port will be allocated.
> Where flag is 1 for RX, 2 for TX, and 3 for RX and TX.
>
> +* ``--ring-bind-lcpu``
> +
> + specify TX/RX rings will be allocated on local socket of lcpu.
> + It will be ignored if ring-numa-config or port-numa-config is used.
> + As a result, it allows one port binds to multiple NUMA nodes.
> +
> * ``--socket-num=N``
>
> Set the socket from which all memory is allocated in NUMA mode,
> --
> 1.8.3.1
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