Yield once to VM per quantum, another thread prio crate, some timings, use condvar instead of crossbeam; no improvements

[orottier]

Not really sure what to make out of all this. My CPU load goes down by a factor 2 but now my real-time issues are back.

Leaving this here for further consideration, my advices would be:

• keep padenot's thread prio crate, it looks solid
• keep the condvar, more lightweight than crossbeam and also some code improvements
• remove the tick processor and still yield to V8 continuously (old behaviour) - somehow my mac seems to go in deep sleep if the worker thread has nothing to do and may wake up only milliseconds later?

[b-ma]

Hey, thanks

I will need to have a closer look (and play a bit with CondVar in a more simple setup I guess :) to understand your changes more clearly.

now my real-time issues are back....

Weird cannot reproduce on my side, I tried to have a quick look to libuv issues and docs but couldn't find any mention of some dynamic priority management of the threads, so the mystery still holds...

In any case, I agree with your recommendations, having no clicks is far more important than having this one per quantum tick! This can clearly wait for clean solution