Register jitter values in a histogram on the server

packet-exchange/src/server.c

@@ -141,6 +141,14 @@ static void *packet_receiving_thread(void *p) {
         diff = calcdiff_ns(current, previous);
         stats->min_interval = diff < stats->min_interval ? diff : stats->min_interval;
         stats->max_interval = diff > stats->max_interval ? diff : stats->max_interval;
+
+        if( diff > MAX_HIST_VAL * 1000 ) {
+          fprintf(stderr, "jitter higher than MAX_HIST_VAL\n");
+          exit(EXIT_FAILURE);
+        }
+        else {
+          histograms[2][diff / 1000] = diff / 1000;
+        }
       }
 
       previous = current;
@@ -235,7 +243,7 @@ static void print_histograms() {
   duration_hour = duration / NSEC_PER_SEC / 3600;
   duration_minutes = duration / NSEC_PER_SEC / 60 - duration_hour * 60;
 
-  interval = (param->stats.min_interval + param->stats.max_interval) / 2;
+  interval = (param->stats.min_interval + param->stats.max_interval) / 2 / 1000;
 
   printf("{\"measure_sets\": [{"
              "\"measure_type\": \"packet_recv_timestamps\","