Unityで実行時間を計測する

3msと出力される

using UnityEngine;
using System.Diagnostics;

public class Test : MonoBehaviour {

	// Use this for initialization
	void Start () {
		Stopwatch sw = new Stopwatch ();
		sw.Start ();
		// 3秒待つ.
		System.Threading.Thread.Sleep (3);
		sw.Stop ();
		UnityEngine.Debug.Log (sw.ElapsedMilliseconds+"ms");
	}
}