stats: add loops per second counter in the stats segment.

This change adds loops per second in the stats segment.
Applications using the stats segment to monitor VPP
can use this for better monitoring

Type: fix

Signed-off-by: Radha krishna Saragadam <krishna_srk2003@yahoo.com>
Change-Id: I53081f40ee918eec9763513a639b9d8a02488b20

1 files changed, 15 insertions, 3 deletions

diff --git a/src/vlib/stats/init.c b/src/vlib/stats/init.c
index 16a47c2f78d..8b382daf333 100644
--- a/src/vlib/stats/init.c
+++ b/src/vlib/stats/init.c
@@ -8,12 +8,14 @@
 
 #define STAT_SEGMENT_SOCKET_FILENAME "stats.sock"
 
+static u32 vlib_loops_stats_counter_index;
+
 static void
 vector_rate_collector_fn (vlib_stats_collector_data_t *d)
 {
   vlib_main_t *this_vlib_main;
-  counter_t **counters;
-  counter_t *cb;
+  counter_t **counters, **loops_counters;
+  counter_t *cb, *loops_cb;
   f64 vector_rate = 0.0;
   u32 i, n_threads = vlib_get_n_threads ();
 
@@ -21,6 +23,11 @@ vector_rate_collector_fn (vlib_stats_collector_data_t *d)
   counters = d->entry->data;
   cb = counters[0];
 
+  vlib_stats_validate (vlib_loops_stats_counter_index, 0, n_threads - 1);
+  loops_counters =
+    vlib_stats_get_entry_data_pointer (vlib_loops_stats_counter_index);
+  loops_cb = loops_counters[0];
+
   for (i = 0; i < n_threads; i++)
     {
       f64 this_vector_rate;
@@ -28,9 +35,10 @@ vector_rate_collector_fn (vlib_stats_collector_data_t *d)
 
       this_vector_rate = vlib_internal_node_vector_rate (this_vlib_main);
       vlib_clear_internal_node_vector_rate (this_vlib_main);
-
       cb[i] = this_vector_rate;
       vector_rate += this_vector_rate;
+
+      loops_cb[i] = this_vlib_main->loops_per_second;
     }
 
   /* And set the system average rate */
@@ -115,8 +123,12 @@ vlib_stats_init (vlib_main_t *vm)
   reg.private_data = vlib_stats_add_gauge ("/sys/vector_rate");
   reg.entry_index =
     vlib_stats_add_counter_vector ("/sys/vector_rate_per_worker");
+  vlib_loops_stats_counter_index =
+    vlib_stats_add_counter_vector ("/sys/loops_per_worker");
   vlib_stats_register_collector_fn (&reg);
   vlib_stats_validate (reg.entry_index, 0, vlib_get_n_threads ());
+  vlib_stats_validate (vlib_loops_stats_counter_index, 0,
+		       vlib_get_n_threads ());
 
   return 0;
 }