Re: [dpdk-dev] [EXT] RE: [PATCH 1/6] app/test-eventdev: Enhancing perf-queue packet flow

[Apeksha Gupta <apeksha.gupta@nxp.com>]

> -----Original Message-----
> From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
> Sent: Thursday, July 2, 2020 8:54 AM
> To: Apeksha Gupta <apeksha.gupta@nxp.com>;
> jerin.jacob@caviumnetworks.com
> Cc: dev@dpdk.org; thomas@monjalon.net; Hemant Agrawal
> <hemant.agrawal@nxp.com>; Nipun Gupta <nipun.gupta@nxp.com>; Akhil
> Goyal <akhil.goyal@nxp.com>; stable@dpdk.org
> Subject: [EXT] RE: [dpdk-dev] [PATCH 1/6] app/test-eventdev: Enhancing
> perf-queue packet flow
> 
> Caution: EXT Email
> 
> >Subject: [dpdk-dev] [PATCH 1/6] app/test-eventdev: Enhancing perf-
> >queue packet flow
> >
> >The event ethernet Tx adapter provides data path for the ethernet
> >transmit
> >stage. Enqueue a burst of events objects supplied on an event device.
> >
> 
> NAK, please use pipeline_atq/queue to test Rx->Tx performance.
> Perf_atq/queue should only be used to test event device
> performance/latency such as
> <event_src(CPU/Rx/timer)> -> worker.
> 
[Apeksha] Okay, agree.

> >Fixes: 2369f73329 ("app/testeventdev: add perf queue worker
> >functions")
> >Cc: stable@dpdk.org
> >
> >Signed-off-by: Apeksha Gupta <apeksha.gupta@nxp.com>
> >---
> > app/test-eventdev/test_perf_common.c | 11 ++++++++
> > app/test-eventdev/test_perf_common.h |  1 +
> > app/test-eventdev/test_perf_queue.c  | 42 ++++++++++++++++++++---
> >-----
> > 3 files changed, 43 insertions(+), 11 deletions(-)
> >
> >diff --git a/app/test-eventdev/test_perf_common.c b/app/test-
> >eventdev/test_perf_common.c
> >index b3af4bfeca..341e16eade 100644
> >--- a/app/test-eventdev/test_perf_common.c
> >+++ b/app/test-eventdev/test_perf_common.c
> >@@ -687,9 +687,20 @@ perf_ethdev_setup(struct evt_test *test,
> >struct evt_options *opt)
> >               return -ENODEV;
> >       }
> >
> >+      t->internal_port = 1;
> >       RTE_ETH_FOREACH_DEV(i) {
> >               struct rte_eth_dev_info dev_info;
> >               struct rte_eth_conf local_port_conf = port_conf;
> >+              uint32_t caps = 0;
> >+
> >+              ret = rte_event_eth_tx_adapter_caps_get(opt->dev_id,
> >i, &caps);
> >+              if (ret != 0) {
> >+                      evt_err("failed to get event tx adapter[%d]
> >caps", i);
> >+                      return ret;
> >+              }
> >+
> >+              if (!(caps &
> >RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT))
> >+                      t->internal_port = 0;
> >
> >               ret = rte_eth_dev_info_get(i, &dev_info);
> >               if (ret != 0) {
> >diff --git a/app/test-eventdev/test_perf_common.h b/app/test-
> >eventdev/test_perf_common.h
> >index d8fbee6d89..716199d8c9 100644
> >--- a/app/test-eventdev/test_perf_common.h
> >+++ b/app/test-eventdev/test_perf_common.h
> >@@ -48,6 +48,7 @@ struct test_perf {
> >       int done;
> >       uint64_t outstand_pkts;
> >       uint8_t nb_workers;
> >+      uint8_t internal_port;
> >       enum evt_test_result result;
> >       uint32_t nb_flows;
> >       uint64_t nb_pkts;
> >diff --git a/app/test-eventdev/test_perf_queue.c b/app/test-
> >eventdev/test_perf_queue.c
> >index 29098580e7..f79e4a4164 100644
> >--- a/app/test-eventdev/test_perf_queue.c
> >+++ b/app/test-eventdev/test_perf_queue.c
> >@@ -71,10 +71,12 @@ perf_queue_worker(void *arg, const int
> >enable_fwd_latency)
> > }
> >
> > static int
> >-perf_queue_worker_burst(void *arg, const int enable_fwd_latency)
> >+perf_queue_worker_burst(void *arg, const int enable_fwd_latency,
> >+                                      const uint32_t flags)
> > {
> >       PERF_WORKER_INIT;
> >       uint16_t i;
> >+      uint16_t nb_tx;
> >       /* +1 to avoid prefetch out of array check */
> >       struct rte_event ev[BURST_SIZE + 1];
> >
> >@@ -111,12 +113,20 @@ perf_queue_worker_burst(void *arg, const
> >int enable_fwd_latency)
> >                       }
> >               }
> >
> >-              uint16_t enq;
> >-
> >-              enq = rte_event_enqueue_burst(dev, port, ev, nb_rx);
> >-              while (enq < nb_rx) {
> >-                      enq += rte_event_enqueue_burst(dev, port,
> >+              if (flags == TEST_PERF_EVENT_TX_DIRECT) {
> >+                      nb_tx =
> >rte_event_eth_tx_adapter_enqueue(dev, port,
> >+                                                              ev,
> >nb_rx, 0);
> >+                      while (nb_tx < nb_rx && !t->done)
> >+                              nb_tx +=
> >rte_event_eth_tx_adapter_enqueue(dev,
> >+                                                      port, ev +
> >nb_tx,
> >+                                                      nb_rx - nb_tx,
> >0);
> >+              } else {
> >+                      uint16_t enq;
> >+                      enq = rte_event_enqueue_burst(dev, port, ev,
> >nb_rx);
> >+                      while (enq < nb_rx) {
> >+                              enq += rte_event_enqueue_burst(dev,
> >port,
> >                                                       ev + enq, nb_rx
> >- enq);
> >+                      }
> >               }
> >       }
> >       return 0;
> >@@ -130,16 +140,26 @@ worker_wrapper(void *arg)
> >
> >       const bool burst = evt_has_burst_mode(w->dev_id);
> >       const int fwd_latency = opt->fwd_latency;
> >-
> >+      const bool internal_port = w->t->internal_port;
> >+      uint32_t flags;
> >       /* allow compiler to optimize */
> >       if (!burst && !fwd_latency)
> >               return perf_queue_worker(arg, 0);
> >       else if (!burst && fwd_latency)
> >               return perf_queue_worker(arg, 1);
> >-      else if (burst && !fwd_latency)
> >-              return perf_queue_worker_burst(arg, 0);
> >-      else if (burst && fwd_latency)
> >-              return perf_queue_worker_burst(arg, 1);
> >+      else if (burst && !fwd_latency && internal_port) {
> >+              flags = TEST_PERF_EVENT_TX_DIRECT;
> >+              return perf_queue_worker_burst(arg, 0, flags);
> >+      } else if (burst && !fwd_latency && !internal_port) {
> >+              flags = TEST_PERF_EVENT_TX_ENQ;
> >+              return perf_queue_worker_burst(arg, 1, flags);
> >+      } else if (burst && fwd_latency && internal_port) {
> >+              flags = TEST_PERF_EVENT_TX_DIRECT;
> >+              return perf_queue_worker_burst(arg, 0, flags);
> >+      } else if (burst && fwd_latency && !internal_port) {
> >+              flags = TEST_PERF_EVENT_TX_ENQ;
> >+              return perf_queue_worker_burst(arg, 1, flags);
> >+      }
> >
> >       rte_panic("invalid worker\n");
> > }
> >--
> >2.17.1