Not the runtime per se, but cooperative scheduling has the advantage that tasks do not yield at adverse code points, e.g., right before giving up a lock, or performing an I/O request. Of course the lack of preemption has it's own downsides, but with thread-per-request you tend to run into tail latency issues much earlier than context switching overhead.
Not the runtime per se, but cooperative scheduling has the advantage that tasks do not yield at adverse code points, e.g., right before giving up a lock, or performing an I/O request. Of course the lack of preemption has it's own downsides, but with thread-per-request you tend to run into tail latency issues much earlier than context switching overhead.