Add benchmark

src/Arch.Benchmarks/Benchmark.cs

@@ -1,45 +1,16 @@
 using System.Numerics;
 using Arch.Core;
 using Arch.Core.Extensions;
+
 using Arch.Core.Utils;
 
 namespace Arch.Benchmarks;
 
 public class Benchmark
 {
-    private static void Main(string[] args)
+    public static void Main(string[] args)
     {
-        /*
-        // NOTE: Can this be replaced with ManualConfig.CreateEmpty()?
-#pragma warning disable HAA0101 // Array allocation for params parameter
-        var config = new ManualConfig()
-            .WithOptions(ConfigOptions.DisableOptimizationsValidator)
-            .AddValidator(JitOptimizationsValidator.DontFailOnError)
-            .AddLogger(ConsoleLogger.Default)
-            .AddColumnProvider(DefaultColumnProviders.Instance);
-#pragma warning restore HAA0101 // Array allocation for params parameter
-        */
-
-
-
-        var world = World.Create();
-        for (var index = 0; index <= 100; index++)
-        {
-            world.Create<int>();
-        }
-
-        var desc = new QueryDescription().WithAll<int>();
-        for (var index = 0; index <= 100000; index++)
-        {
-            world.Query(in desc, (ref int i) =>
-            {
-            });
-        }
-
-
-
-        // NOTE: Is `-- --job` a typo?
-        // Use: dotnet run -c Release --framework net7.0 -- --job short --filter *IterationBenchmark*
-        //BenchmarkSwitcher.FromAssembly(typeof(Benchmark).Assembly).Run(args, config);
+        BenchmarkSwitcher.FromAssembly(typeof(Benchmark).Assembly).Run(args);
+        //BenchmarkSwitcher.FromAssembly(typeof(Benchmark).Assembly).Run(args, new DebugInProcessConfig());
     }
 }

src/Arch.Benchmarks/DuplicateBenchmark.cs

@@ -0,0 +1,67 @@
+using Arch.Core;
+using Arch.Core.Utils;
+
+namespace Arch.Benchmarks;
+
+[HtmlExporter]
+//[MemoryDiagnoser]
+//[HardwareCounters(HardwareCounter.CacheMisses)]
+public class DuplicateBenchmark
+{
+    public int Amount = 100000;
+
+    private static readonly ComponentType[] _group = { typeof(Transform), typeof(Velocity) };
+    private readonly QueryDescription _queryDescription = new(all: _group);
+
+    private static World? _world;
+    private static Entity _entity = Entity.Null;
+    private static Entity[]? _array = null;
+
+    [IterationSetup]
+    public void Setup()
+    {
+        _world = World.Create();
+        _world.Reserve(_group, 1);
+        _entity = _world.Create(new Transform { X = 111, Y = 222}, new Velocity { X = 333, Y = 444 });
+        _array = new Entity[Amount];
+    }
+
+    [IterationCleanup]
+    public void Cleanup()
+    {
+        World.Destroy(_world);
+        _world = null;
+    }
+
+    /// DuplicateN() method.
+    [Benchmark]
+    public void DuplicateNInternal()
+    {
+        _world.DuplicateN(_entity, _array.AsSpan());
+    }
+
+    /// DuplicateN() in terms of Duplicate() method.
+    [Benchmark]
+    public void DuplicateNDuplicate()
+    {
+        for (int i = 0; i < Amount; ++i)
+        {
+            _array[i] = _world.Duplicate(_entity);
+        }
+    }
+
+    /// Benchmark DuplicateN() if implemented via GetAllComponents.
+    [Benchmark]
+    public void DuplicateNGetAllComponents()
+    {
+        for (int i = 0; i < Amount; ++i)
+        {
+            var arch = _world.GetArchetype(_entity);
+            var copiedEntity = _world.Create(arch.Signature);
+            foreach (var c in _world.GetAllComponents(_entity))
+            {
+                _world.Set(_entity, c);
+            }
+        }
+    }
+}