How to fix this threading issue that exists only on Windows?
https://spark.lucko.me/FlCb0anrpw
#Threading issues
noble nova
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still vapor
What about that would be an issue?
It tells you that most threads are waiting most of the time meaning there is no work these threads have to do which is perfectly fine
noble nova
What about that would be an issue?
server suffers huge server lag spikes because we have to wake up sleeping io threads
example: we have one sudden job to complete and io threads are sleeping at this moment
still vapor
Sure that waking up these threads is the issue?
and not it just doing other work before waking up the threads?
If so, what makes you sure?
noble nova
well, i have to apologize first, im not a dev.
additional information:
we added spinwait in order to fix world saving times on windows, but this introduced mspt spikes when opening loot chest in shipwreck which contains treasure map and we reverted it.
// attempt to spin-wait before sleeping
if (!pollTasks()) {
Thread.interrupted(); // clear interrupt flag
for (int i = 0; i < 5000; i ++) {
if (pollTasks()) continue main_loop;
LockSupport.parkNanos("Spin-waiting for tasks", 10_000); // 100us
}
}
What's mspt?
noble nova
millisecond per tick
noble nova
budget is 50ms and it completes in 7 seconds
probably show the code would be the best option for me...
https://github.com/RelativityMC/FlowSched/tree/491bc6a731b724d44072bfb7d51eea3433214cb6
still vapor
Why aren't you just using ExecutorService to submit tasks?
still vapor
Why aren't you just using `ExecutorService` to submit tasks?
These are well-tested performant ways to manage tasks
With that, you can use PriorityBlockingQueue for ensuring priorities
noble nova
Why aren't you just using `ExecutorService` to submit tasks?
because it is too basic for us
still vapor
> because it is too basic for us
What capabilities are you missing?
As I said, you can make it use priorities
noble nova
it got rejected for an unknown reason for me
message search shows last PriorityBlockingQueue reference has been written in 2021
still vapor
If you want an efficient implementaton, use ExecutorService
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