"Timers rely on the network poller", why is that?

[Vincent Blanchon]

Hi everyone,

From what I understand, timers are ran by:

- the P holding them

- other P if timer-stealing happen (thanks to the async preemption that should not happen often)

- sysmon thread that, periodically, check if some timers have to run

But, in the comments of the code, I have seen this sentence "Timers rely on the network poller". I wonder how is it related to the net poller, I do not get the relation here.

Any help is appreciated :)

Thank you

[Amnon Baron Cohen]

The go runtime does its waiting (both for timers and network events) in netpoll.