[dpdk-dev] [PATCH v11 15/18] examples/distributor: give Rx thread a core
David Hunt
david.hunt at intel.com
Mon Mar 20 11:08:39 CET 2017
Now that we're printing out a page of stats every second to the console,
we should give the stats it's own core so that we don't interfere with
the performance of the Rx core.
Signed-off-by: David Hunt <david.hunt at intel.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
---
examples/distributor/main.c | 24 ++++++++++++++++--------
1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/examples/distributor/main.c b/examples/distributor/main.c
index 53c7b38..6aa8755 100644
--- a/examples/distributor/main.c
+++ b/examples/distributor/main.c
@@ -680,9 +680,10 @@ main(int argc, char *argv[])
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid distributor parameters\n");
- if (rte_lcore_count() < 4)
+ if (rte_lcore_count() < 5)
rte_exit(EXIT_FAILURE, "Error, This application needs at "
- "least 4 logical cores to run:\n"
+ "least 5 logical cores to run:\n"
+ "1 lcore for stats (can be core 0)\n"
"1 lcore for packet RX\n"
"1 lcore for distribution\n"
"1 lcore for packet TX\n"
@@ -724,7 +725,7 @@ main(int argc, char *argv[])
}
d = rte_distributor_create("PKT_DIST", rte_socket_id(),
- rte_lcore_count() - 3,
+ rte_lcore_count() - 4,
RTE_DIST_ALG_BURST);
if (d == NULL)
rte_exit(EXIT_FAILURE, "Cannot create distributor\n");
@@ -763,6 +764,18 @@ main(int argc, char *argv[])
/* tx core */
rte_eal_remote_launch((lcore_function_t *)lcore_tx,
dist_tx_ring, lcore_id);
+ } else if (worker_id == rte_lcore_count() - 2) {
+ printf("Starting rx on worker_id %d, lcore_id %d\n",
+ worker_id, lcore_id);
+ /* rx core */
+ struct lcore_params *p =
+ rte_malloc(NULL, sizeof(*p), 0);
+ if (!p)
+ rte_panic("malloc failure\n");
+ *p = (struct lcore_params){worker_id, d, rx_dist_ring,
+ dist_tx_ring, mbuf_pool};
+ rte_eal_remote_launch((lcore_function_t *)lcore_rx,
+ p, lcore_id);
} else {
printf("Starting worker on worker_id %d, lcore_id %d\n",
worker_id, lcore_id);
@@ -778,11 +791,6 @@ main(int argc, char *argv[])
}
worker_id++;
}
- /* call lcore_main on master core only */
- struct lcore_params p = { 0, d, rx_dist_ring, dist_tx_ring, mbuf_pool};
-
- if (lcore_rx(&p) != 0)
- return -1;
freq = rte_get_timer_hz();
t = rte_rdtsc() + freq;
--
2.7.4
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