c++ - MSVC 16.8.4 中 std::this_thread::sleep 的大量开销？

Question

在我们的渲染循环中，我们总是有一个格式为 this_thread::sleep_until(Thisframe + milliseconds(1000/60)); 的 FPS 限制器，但是在编译最新版本之后FPS 从未超过 32。所以玩了延迟，发现任何 sleep >= 1 微秒都会增加 5-16 毫秒。还有其他人注意到类似的事情吗？

// std::this_thread::sleep_for(std::chrono::nanoseconds(N));
------------------------------------------------------------
N           |  Max (ns)  | Avg (ns)  | Min (ns)
------------------------------------------------------------
1           541          532          530
10          526          526          523
100         526          526          525
1'000       5'105'253    5'035'142    4'945'181
10'000      15'849'245   15'829'724   15'751'297
100'000     15'900'155   15'884'466   15'846'923
1'000'000   15'885'041   15'877'936   15'872'767
10'000'000  15'899'457   15'884'640   15'881'723

// std::this_thread::sleep_for(std::chrono::nanoseconds(N));
------------------------------------------------------------
N           |  Avg (ns)
------------------------------------------------------------
3'000       17'759'597
2'500       13'888'173
2'000       10'093'005
1'500       9'393'417 
1'000       4'735'949
750         2'841'692
700         5'445'165
650         4'658'634
600         2'153
500         1'789

Answer 1

感谢@Raymond Chen 对上述问题的评论解决了:

You might be seeing this: New Thread.Sleep behaviour under Windows 10 October Update 20H2. The system used to let you get away with somebody else cranking the timer resolution via timeBeginPeriod() (usually the web browser), but now it requires you to do it yourself.