[Unity] 如何測試函式執行時間？

使用 Unity Time 下的各種屬性，包含 time、deltaTime、fixedDeltaTime
只有在不同 Frame 才會有值
想要正確測試某個函式的時間，可以採用以下三種方法
值得一提的是，Stopwatch 似乎就是為了做這件事情而存在的

Overview

1. DateTime.Now
2. Environment.TickCount
3. System.Diagnostics.Stopwatch

1. DateTime.Now

var startTime = DateTime.Now;

SomeFunction();

Debug.Log((DateTime.Now - startTime).Milliseconds);

2. Environment.TickCount

var startTick = Environment.TickCount;

SomeFunctions();

Debug.Log(Environment.TickCount - startTick);

3. System.Diagnostics.Stopwatch

var stopwatch = new Stopwatch();
stopwatch.Start();

SomeFunctions();

stopwatch.Stop();

Debug.Log(stopwatch.ElapsedMilliseconds);

完整程式碼

Reference

http://answers.unity3d.com/questions/8967/using-timetime-to-test-the-performance-of-scripts.html

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