[Benchmarks] Add Ask vs. Tell memory pressure baseline (#7244)

* added baseline for measuring Ask vs. Tell memory pressure

* remove unnecessary cleanup

* made it easier to understand requests / second

src/benchmark/Akka.Benchmarks/Actor/ActorMessagingMemoryPressureBenchmark.cs

@@ -14,7 +14,7 @@
 
 namespace Akka.Benchmarks.Actor
 {
-    [Config(typeof(MicroBenchmarkConfig))]
+    [Config(typeof(MonitoringConfig))]
     public class ActorMessagingMemoryPressureBenchmark
     {
         #region Classes
@@ -46,12 +46,13 @@ public MyActor()
         private IActorRef _actorEntryPoint;
 
         private const string Msg = "hit";
-
-        [Params(100_000)]
-        public int MsgCount { get; set; }
+
+        public const int MsgCount = 100_000;
 
         [Params(10, 100)]
         public int ActorCount { get; set; }
+
+        private Task[] _askTasks;
 
         [GlobalSetup]
         public void Setup()
@@ -75,9 +76,10 @@ public void PerInvokeCleanup()
         public void PerInvokeSetup()
         {
             _actorEntryPoint = _sys.ActorOf(Props.Create<MyActor>().WithRouter(new BroadcastPool(ActorCount)));
+            _askTasks = new Task[MsgCount];
         }
 
-        [Benchmark]
+        [Benchmark(Baseline = true, OperationsPerInvoke = MsgCount)]
         public Task PushMsgs()
         {
             for (var i = 0; i < MsgCount; i++)
@@ -87,5 +89,16 @@ public Task PushMsgs()
 
             return Task.CompletedTask;
         }
+
+        [Benchmark(OperationsPerInvoke = MsgCount)]
+        public Task AskMsgs()
+        {
+            for (var i = 0; i < MsgCount; i++)
+            {
+                _askTasks[i] = _actorEntryPoint.Ask<string>(Msg);
+            }
+
+            return Task.WhenAll(_askTasks);
+        }
     }
 }