.net - 秒表真的坏了吗？

Question

在Stopwatch class的MSDN页面上，我发现了interesting article的链接，该链接对Stopwatch作了以下声明:

However there are some serious issues:

• This can be unreliable on a PC with multiple processors. Due to a bug in
  the BIOS, Start() and Stop() must be executed on the same processor to get a correct result.

• This is unreliable on processors that do not have a constant clock speed (most processors can reduce the clock speed to conserve energy). This is explained in detail here.

我有点困惑。我见过使用Stopwatch的 tons of examples，没有人提及此缺点。这有多严重？我应该避免使用秒表吗？

Answer 1

它没有被破坏，只是有局限性。对于大多数目的(阅读:非正式的微基准测试)，StopWatch可以很好地使用，只是因为它足以进行非正式的测试。为了更正式的目的，您很可能希望滚动自己的工具代码，因为您将投入更多的精力来获得正确的结果。