Can anyone pls explain how come `delay` sometimes ...

# coroutines

[Martin Rajniak]

Can anyone pls explain how come delay sometimes takes 30m instead of expected 4m (that were supplied as argument)?

It is observed on Android.

[Joffrey]

Maybe you're running this delay() in a dispatcher with a limited number threads, and running blocking code in that same dispatcher at the same time, which would prevent it from resuming other coroutines. Could you please share a bit more details about those coroutines?

[louiscad]

App/device put in deep sleep

[louiscad]

delay is based on SystemClock.uptimeMillis

[louiscad]

Because delay is based on Handler.postDelayed which uses this clock, and doesn't itself put any wakelock

[Martin Rajniak]

@Joffrey thx, but probably not it, since I have reproduced with MainDispatcher and I would expect ANRs in that case

@louiscad
Thank you, that explains it.
Today I learned that delay has Android specific implementation.