Understanding time

[Frank Muller]

Crystal clear guys. Thank you so much



> 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
>
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