[erlang-questions] Minimum time for timer:sleep()?
Sun Mar 18 23:46:13 CET 2007
Here's some simple code to test timer:sleep/1:
T1 = now(),
T2 = now(),
io:fwrite("elapsed: ~w\n", [timer:now_diff(T2, T1)]).
On the recent model MacBook I tested this on, test(5) prints "elapsed:
10182". In fact, any value less than 10 milliseconds sleeps for ~10
milliseconds. Considering that a message send/receive pair is
measured in single-digit MICROseconds on the same machine, this is
curious to me. Does anyone have any insight into this behavior?
(FWIW, timer:sleep/1 is implemented as a single receive statement.)
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