[neonsunset]

So does C# with active blocking detection (which injects threads to counteract this) and hill climbing algorithm to scale threadpool threads automatically.

[Rapzid]

Which is very handy sometimes. The default throttling is a bit conservative though and perhaps based on Windows thread costs.

[neonsunset]

It used to be the case - before .NET 6 there was only hill climbing so poorly written blocking code could starve threadpool very quickly (for + Task.Run + Thread.Sleep and the like), but since 6 blocking threads in such a way makes threadpool inject more threads without going through hill climbing mitigating the impact much more effectively. This does not mean such code should not be fixed however :)