Bit-rate collation should only be done by one core. This patch adds
an option to select which core performs the bit-rate calculation,
which is also disabled by default.
Fixes: 7e4441c8efb9 ("app/testpmd: add bitrate statistics calculation")
Signed-off-by: Remy Horton <remy.hor...@intel.com>
---
app/test-pmd/parameters.c | 15 +++++++++++++++
app/test-pmd/testpmd.c | 36 ++++++++++++++++++++++++++----------
app/test-pmd/testpmd.h | 5 +++++
3 files changed, 46 insertions(+), 10 deletions(-)
diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 3f4d3a2..a6140b5 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -536,6 +536,9 @@ launch_args_parse(int argc, char** argv)
#ifdef RTE_LIBRTE_LATENCY_STATS
{ "latencystats", 1, 0, 0 },
#endif
+#ifdef RTE_LIBRTE_BITRATE
+ { "bitratestats", 1, 0, 0 },
+#endif
{ "disable-crc-strip", 0, 0, 0 },
{ "enable-lro", 0, 0, 0 },
{ "enable-rx-cksum", 0, 0, 0 },
@@ -793,6 +796,18 @@ launch_args_parse(int argc, char** argv)
" must be >= 0\n", n);
}
#endif
+#ifdef RTE_LIBRTE_BITRATE
+ if (!strcmp(lgopts[opt_idx].name, "bitratestats")) {
+ n = atoi(optarg);
+ if (n >= 0) {
+ bitrate_lcore_id = (lcoreid_t) n;
+ bitrate_enabled = 1;
+ } else
+ rte_exit(EXIT_FAILURE,
+ "invalid lcore id %d for
bitratestats"
+ " must be >= 0\n", n);
+ }
+#endif
if (!strcmp(lgopts[opt_idx].name, "disable-crc-strip"))
rx_mode.hw_strip_crc = 0;
if (!strcmp(lgopts[opt_idx].name, "enable-lro"))
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 3a57348..cfd5382 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -355,8 +355,12 @@ uint16_t nb_rx_queue_stats_mappings = 0;
unsigned max_socket = 0;
+#ifdef RTE_LIBRTE_BITRATE
/* Bitrate statistics */
struct rte_stats_bitrates *bitrate_data;
+lcoreid_t bitrate_lcore_id;
+uint8_t bitrate_enabled;
+#endif
/* Forward function declarations */
static void map_port_queue_stats_mapping_registers(uint8_t pi, struct rte_port
*port);
@@ -962,12 +966,18 @@ run_pkt_fwd_on_lcore(struct fwd_lcore *fc, packet_fwd_t
pkt_fwd)
for (sm_id = 0; sm_id < nb_fs; sm_id++)
(*pkt_fwd)(fsm[sm_id]);
#ifdef RTE_LIBRTE_BITRATE
- tics_current = rte_rdtsc();
- if (tics_current - tics_datum >= tics_per_1sec) {
- /* Periodic bitrate calculation */
- for (idx_port = 0; idx_port < cnt_ports; idx_port++)
- rte_stats_bitrate_calc(bitrate_data, idx_port);
- tics_datum = tics_current;
+ if (bitrate_enabled != 0 &&
+ bitrate_lcore_id == rte_lcore_id()) {
+ tics_current = rte_rdtsc();
+ if (tics_current - tics_datum >= tics_per_1sec) {
+ /* Periodic bitrate calculation */
+ for (idx_port = 0;
+ idx_port < cnt_ports;
+ idx_port++)
+ rte_stats_bitrate_calc(bitrate_data,
+ idx_port);
+ tics_datum = tics_current;
+ }
}
#endif
#ifdef RTE_LIBRTE_LATENCY_STATS
@@ -2238,6 +2248,9 @@ main(int argc, char** argv)
rte_panic("Empty set of forwarding logical cores - check the "
"core mask supplied in the command parameters\n");
+ /* Bitrate stats disabled by default */
+ bitrate_enabled = 0;
+
argc -= diag;
argv += diag;
if (argc > 1)
@@ -2275,10 +2288,13 @@ main(int argc, char** argv)
/* Setup bitrate stats */
#ifdef RTE_LIBRTE_BITRATE
- bitrate_data = rte_stats_bitrate_create();
- if (bitrate_data == NULL)
- rte_exit(EXIT_FAILURE, "Could not allocate bitrate data.\n");
- rte_stats_bitrate_reg(bitrate_data);
+ if (bitrate_enabled != 0) {
+ bitrate_data = rte_stats_bitrate_create();
+ if (bitrate_data == NULL)
+ rte_exit(EXIT_FAILURE,
+ "Could not allocate bitrate data.\n");
+ rte_stats_bitrate_reg(bitrate_data);
+ }
#endif
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index a9ff07e..6443f7e 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -380,6 +380,11 @@ extern uint8_t latencystats_enabled;
extern lcoreid_t latencystats_lcore_id;
#endif
+#ifdef RTE_LIBRTE_BITRATE
+extern lcoreid_t bitrate_lcore_id;
+extern uint8_t bitrate_enabled;
+#endif
+
extern struct rte_fdir_conf fdir_conf;
/*
--
2.5.5
