diff --git a/tests/MiniProfiler.Tests/LockPerformanceTest.cs b/tests/MiniProfiler.Tests/LockPerformanceTest.cs
new file mode 100644
index 000000000..0f1826bf5
--- /dev/null
+++ b/tests/MiniProfiler.Tests/LockPerformanceTest.cs
@@ -0,0 +1,127 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace StackExchange.Profiling.Tests
+{
+    public class LockPerformanceTest
+    {
+        private readonly ITestOutputHelper _output;
+
+        public LockPerformanceTest(ITestOutputHelper output)
+        {
+            _output = output;
+        }
+
+        [Fact]
+        public void LockPerformance()
+        {
+
+            var time = new Stopwatch();
+
+            var list1 = new List<int>();
+            time.Start();
+            for (int i = 0; i < 1000000; i++)
+            {
+                list1.Add(i);
+            }
+            time.Stop();
+            _output.WriteLine("output");
+            _output.WriteLine($"Without locks took: {time.Elapsed.TotalMilliseconds}ms");
+
+            list1 = new List<int>();
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                lock(list1)
+                    list1.Add(i);
+            }
+            time.Stop();
+            
+            _output.WriteLine("output");
+            _output.WriteLine($"With lock took: {time.Elapsed.TotalMilliseconds}ms");
+
+            list1 = new List<int>();
+            var spinLock = new SpinLock(enableThreadOwnerTracking: false);
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                var locked = false;
+                spinLock.Enter(ref locked);
+                if (!locked)
+                    throw new Exception("didn't lock");
+                try
+                {
+                    list1.Add(i);
+                }
+                finally
+                {
+                    if (locked)
+                        spinLock.Exit();
+                }
+            }
+            time.Stop();
+
+            _output.WriteLine("output");
+            _output.WriteLine($"With spinlock took: {time.Elapsed.TotalMilliseconds}ms");
+
+            var list2 = new ConcurrentQueue<int>();
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                list2.Enqueue(i);
+            }
+            time.Stop();
+            _output.WriteLine("output");
+            _output.WriteLine($"With concurrent queue took: {time.Elapsed.TotalMilliseconds}ms");
+
+            var list3 = new ConcurrentBag<int>();
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                list3.Add(i);
+            }
+            time.Stop();
+            _output.WriteLine("output");
+            _output.WriteLine($"With concurrent bag took: {time.Elapsed.TotalMilliseconds}ms");
+
+            var list4 = new ConcurrentDictionary<int, int>();
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                list4.AddOrUpdate(i, i, (i1, i2) => i);
+            }
+            time.Stop();
+            _output.WriteLine("output");
+            _output.WriteLine($"With concurrent dictionary took: {time.Elapsed.TotalMilliseconds}ms");
+
+            list1 = new List<int>();
+            var lockCount = 0;
+            time.Restart();
+            for (int i = 0; i < 1000000; i++)
+            {
+                while (Interlocked.CompareExchange(ref lockCount, 1, 0) != 0) ;
+                try
+                {
+                    list1.Add(i);
+                }
+                finally
+                {
+                    lockCount = 0;
+                }
+            }
+            time.Stop();
+
+            _output.WriteLine("output");
+            _output.WriteLine($"With manual spinlock took: {time.Elapsed.TotalMilliseconds}ms");
+
+        }
+    }
+}