Add tracemark and remove trace start

packet-exchange/src/server.c

@@ -109,6 +109,7 @@ static void *packet_receiving_thread(void *p) {
   struct timespec current, previous;
   cpu_set_t mask;
   int prev_packet_id = 0;
+  char tracemark_message[128];
 
   // Set thread CPU affinity
   if (enable_affinity) {
@@ -118,9 +119,6 @@ static void *packet_receiving_thread(void *p) {
       error(EXIT_FAILURE, errno, "Could not set CPU affinity to CPU #1\n");
   }
 
-  // Start tracing
-  if (main_params.enable_tracing) tracing(1);
-
   clock_gettime(CLOCK_MONOTONIC, &measures_start);
 
   // Packet receiving loop
@@ -168,6 +166,8 @@ static void *packet_receiving_thread(void *p) {
       // If the latency hits the tracing threshold, stop tracing
       if (main_params.enable_tracing &&
           (ingress_stats.max_interval > thread_params.latency_threshold)) {
+        sprintf(tracemark_message, "Jitter threshold hit: %dus\n", ingress_stats.max_interval);
+        tracemark(tracemark_message);
         tracing(0);
         break;
       }