Benchmark

Ix.NET/Source/Benchmarks.System.Interactive/Program.cs

@@ -19,6 +19,7 @@ namespace Benchmarks.System.Interactive
             var switcher = new BenchmarkSwitcher(new[] {
                 typeof(BufferCountBenchmark),
                 typeof(DeferBenchmark),
+                typeof(RetryBenchmark),
             });
 
             switcher.Run();

Ix.NET/Source/Benchmarks.System.Interactive/RetryBenchmark.cs

@@ -0,0 +1,34 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using BenchmarkDotNet.Attributes;
+
+namespace Benchmarks.System.Interactive
+{
+    [MemoryDiagnoser]
+    public class RetryBenchmark
+    {
+        [Params(1, 10, 100, 1000, 10000, 100000, 1000000)]
+        public int N;
+        private int _store;
+
+        [Benchmark]
+        public void Finite()
+        {
+            Enumerable.Range(1, N).Retry(100)
+                .Subscribe(v => Volatile.Write(ref _store, v));
+        }
+
+        [Benchmark]
+        public void Infinite()
+        {
+            Enumerable.Range(1, N).Retry()
+                .Subscribe(v => Volatile.Write(ref _store, v));
+        }
+    }
+}