Ashanti Mutinta (May 26 2024 at 18:55): Ashanti Mutinta (May 26 2024 at 18:55):I have an epoch yielding of about 20ms. When I measure the time between each poll call should I expect to see about 20ms as well? I have another thread incrementing epochs and I'm on wasmtime 17.0.2
Alex Crichton (May 26 2024 at 19:26):For cpu bound work that should show up yeah. If the work is otherwise yielding though (eg for io) then the time-per-poll may be shorter
Ashanti Mutinta (May 26 2024 at 19:28):I see it might be something in my code. Have a weird issue where the time elapsed on the poll is 0 most of the time until the last poll which yields the whole thing
Alex Crichton (May 26 2024 at 19:37):Did you call Store::epoch_deadline_async_yield_and_update?
Ashanti Mutinta (May 26 2024 at 19:45):Yes I did right before I called the method. Is that the right way to do it?
Alex Crichton (May 26 2024 at 20:04):It should be ok to call that only once on store creation, no need to call it once per poll
Ashanti Mutinta (May 26 2024 at 20:10):Okay will try and look at this again. Thank you!
Ashanti Mutinta (May 26 2024 at 20:22):Last question(hopefully) do I need to set deadline as well when I'm using epoch_deadline_async_yield? E.g deadline of 20ms with epoch_deadline_async_yield means after 20ms it will give back control to the async runtime?
Alex Crichton (May 26 2024 at 20:48):This may have changed between 17 and 21 so I sort of forget, we had some weird interactions historically possible which is why there was a refactor. I believe all you need to do is configure yielding though
Ashanti Mutinta (May 27 2024 at 17:24):Are there any examples for epoch_deadline_async_yield_and_update? I think I have it right but the numbers still look inconsistent
Ashanti Mutinta (May 28 2024 at 10:27):I think I figured it out. I was using tokio spawn with a very short interval tick and I don't think it liked the context switch much
Notification Bot (May 28 2024 at 14:31):Levent kaya has marked this topic as resolved.
Last updated: Dec 23 2024 at 13:07 UTC