Re: Understanding time
Loïc Hoguin <[email protected]>
| Newsgroups | gmane.comp.lang.erlang.general |
|---|---|
| Organization | Nine Nines |
| Message-ID | <[email protected]> |
It is not strictly monotonic, see the note: https://erlang.org/doc/man/erlang.html#monotonic_time-0 Also see this if you need ordered events: https://erlang.org/doc/apps/erts/time_correction.html#Dos_and_Donts_Determine_Order_of_Events_With_Time_of_the_Event Cheers, On 07/09/2021 08:27, Frank Muller wrote: > Hi Everyone > > Yesterday, a Java developer told me that getting unique timestamps is > only guaranteed to be possible between COREs on the same CPU. Stated > otherwise, two processes on two different CPUs could get the same timestamp. > > I’m now wondering if calls to “erlang:system_time/1” are strictly > monotonic > (https://erlang.org/doc/apps/erts/time_correction.html#strictly-monotonically-increasing) > between Erlang processes on the same scheduler, and even between Erlang > processes on different schedulers. > > Can anyone clarify please? > > /Frank -- Loïc Hoguin https://ninenines.eu