Microbenchmark para escrita/leitura em hashtable

gistfile1.cs

using System;
using System.Diagnostics;

namespace MicroBenchmark.Hashtable
{
    class Program
    {
        const int HASH_SIZE = 1000000;        
        static Guid keyToRetrieve;

        static void Main(string[] args)
        {
            Stopwatch writeTimeCounter = new Stopwatch();
            Stopwatch readTimeCounter = new Stopwatch();
            //
            writeTimeCounter.Start();
            System.Collections.Hashtable hash = PopulateHash();
            writeTimeCounter.Stop();
            //            
            readTimeCounter.Start();            
            byte[] result = (byte[])hash[keyToRetrieve];
            //
            readTimeCounter.Stop();
            Console.WriteLine("Tempo para escrita no hash: {0}", writeTimeCounter.Elapsed);
            Console.WriteLine("Tempo para leitura do hash: {0}", readTimeCounter.Elapsed);            
            Console.Read();
        }

        static System.Collections.Hashtable PopulateHash()
        {
            System.Collections.Hashtable hash = new System.Collections.Hashtable(HASH_SIZE);
            for (int i = 0; i < HASH_SIZE; i++)
            {
                Guid key = Guid.NewGuid();
                hash[key] = key.ToByteArray();
                // Guardando key para testar a leitura depois
                if (i == HASH_SIZE / 2)
                    keyToRetrieve = key;
            }
            return hash;
        }
    }
}