try it like this

src/Application.kt

@@ -17,30 +17,30 @@ fun Application.module(testing: Boolean = false) {
     runBlocking {
         val cachedFile = File("/app/wave.wav").readBytes()
         val gson = GsonBuilder().setPrettyPrinting().create()
-        var startTime : Instant
+        var startTime: Instant
         var elapsed = Duration.ofSeconds(0)
         val targetTime = Duration.ofSeconds(System.getenv("WAITTIME").toLong())
         var currIter = 1
-        val timestamps = LinkedHashMap<Int,Instant>()
-        var currTimeStamp : Instant
+        val timestamps = LinkedHashMap<Int, Instant>()
+        var currTimeStamp: Instant
         val uploader = Uploader()
         val processResults = ProcessResults()
         environment.monitor.subscribe(ApplicationStarted) {
-            val job = GlobalScope.launch {
-                delay(3000L)
-                println("Starting benchmark")
-                startTime = Instant.now()
-                while(elapsed < targetTime){
+            println("Starting benchmark")
+            startTime = Instant.now()
+            while (elapsed < targetTime) {
+                GlobalScope.launch {
                     uploader.uploadData(currIter, gson, cachedFile)
-                    currIter+=1
-                    currTimeStamp = Instant.now()
-                    timestamps[currIter] = currTimeStamp
-                    elapsed = Duration.between(startTime, currTimeStamp)
                 }
-                println("Benchmark ended")
-                processResults.mapToProcess = timestamps
-                processResults.process()
+                currIter += 1
+                currTimeStamp = Instant.now()
+                timestamps[currIter] = currTimeStamp
+                elapsed = Duration.between(startTime, currTimeStamp)
             }
+            println("Benchmark ended")
+            processResults.mapToProcess = timestamps
+            processResults.process()
+
         }
     }
 }