From c97651eb5ccb25429adab59e58fc9db977dc9a80 Mon Sep 17 00:00:00 2001
From: mlemanczyk <marek@lemanczyk.eu>
Date: Thu, 25 May 2023 19:22:02 +0200
Subject: [PATCH] Task creation benchmarks added.

---
 ...TaskRunVsTaskFactoryStartNew.Benchmarks.cs | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Recyclable.Collections.Benchmarks/POC/TaskRunVsTaskFactoryStartNew.Benchmarks.cs

diff --git a/Recyclable.Collections.Benchmarks/POC/TaskRunVsTaskFactoryStartNew.Benchmarks.cs b/Recyclable.Collections.Benchmarks/POC/TaskRunVsTaskFactoryStartNew.Benchmarks.cs
new file mode 100644
index 0000000..546d108
--- /dev/null
+++ b/Recyclable.Collections.Benchmarks/POC/TaskRunVsTaskFactoryStartNew.Benchmarks.cs
@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Threading.Tasks.Sources;
+using BenchmarkDotNet.Attributes;
+using Microsoft.Extensions.ObjectPool;
+
+namespace Recyclable.Collections.Benchmarks.POC
+{
+	[MemoryDiagnoser]
+    public class TaskRunVsTaskFactoryStartNewBenchmarks
+    {
+		public int NumberOfTasks = 100;
+		private static readonly TaskFactory TaskPool = new();
+
+		[Benchmark]
+		public void OwnTaskFactory()
+		{
+			for (var i = 0; i < NumberOfTasks; i++)
+			{
+				_ = TaskPool.StartNew(() => {});
+			}
+		}
+
+        [Benchmark]
+		public void TaskRun()
+		{
+			for (var i = 0; i < NumberOfTasks; i++)
+			{
+				_ = Task.Run(() => { });
+			}
+		}
+
+        [Benchmark(Baseline = true)]
+		public void TaskFactoryStartNew()
+		{
+			for (var i = 0; i < NumberOfTasks; i++)
+			{
+				_ = Task.Factory.StartNew(() => { });
+			}
+		}
+
+		[Benchmark]
+		public void TaskConstructor()
+		{
+			for (var i = 0; i < NumberOfTasks; i++)
+			{
+				new Task(() => { }).Start();
+			}
+		}
+
+		[Benchmark]
+		public void TaskConstructorWithKnownScheduler()
+		{
+			TaskScheduler scheduler = TaskScheduler.Current;
+			for (var i = 0; i < NumberOfTasks; i++)
+			{
+				new Task(() => { }).Start(scheduler);
+			}
+		}
+    }
+}
\ No newline at end of file