Timing BinaryFormatter.Deserialize

PerfBlog06062017_BinaryFormatter_Deserialize.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

class Test
{
    static void Main()
    {
        var books = new List<Book>();
        for (int i = 0; i < 1_000_000; i++)
        {
            string id = i.ToString();
            books.Add(new Book { Name = id, Id = id });
        }

        var formatter = new BinaryFormatter();
        var mem = new MemoryStream();
        formatter.Serialize(mem, books);
        mem.Position = 0;

        var sw = Stopwatch.StartNew();
        formatter.Deserialize(mem);
        sw.Stop();

        Console.WriteLine(sw.Elapsed.TotalSeconds);
    }

    [Serializable]
    private class Book
    {
        public string Name;
        public string Id;
    }
}