Why is List<>.OrderBy LINQ faster than IComparable+List<>.Sort in Debug mode?

Question

I was interested in whether it would be faster to sort my classes using LINQ, or by implementing the IComparable interface and List.Sort. I was quite surprised when the LINQ cod

Answer 1

If you make sure everything is JITed before starting the measure, you might get different results (I also recommend using the Stopwatch class to measure time):

var ll = ts2.ToList();
ll.Sort();
ll.OrderBy(item => item.Age).ToList();

According to my measurements (after adding the above code), IComparable is always faster (even in debug).