gistfile1.cs

using System;
using System.Linq;

namespace DP_perf_1
{
	using System.Diagnostics;

	using Castle.DynamicProxy;

	class Program
	{
		static void Main(string[] args)
		{
			var generator = new ProxyGenerator();
			int i = 0;
			var sw = Stopwatch.StartNew();
			foreach (var type in typeof(object).Assembly.GetTypes().Union(typeof(Uri).Assembly.GetTypes()).Where(t => t.IsVisible && t.IsInterface && !t.IsGenericTypeDefinition))
			{
				var target = generator.CreateInterfaceProxyWithoutTarget(type);
				i++;
				target.GetType();
			}
			sw.Stop();
			Console.WriteLine(i); // 256
			Console.WriteLine(sw.Elapsed);
			Console.ReadKey(true);
		}
	}
}