[issue31539] asyncio.sleep may sleep less time then it should

[Antoine Pitrou]

Antoine Pitrou added the comment:

Le 21/09/2017 à 23:31, STINNER Victor a écrit :
> 
> Yury: asyncio can trigger events earlier than scheduled for performance
> reasons.

If that's true, then it sounds like a bug.  If there is a rationale for
a "fast and imprecise" API, then it would seem ok to add such an API.
But the default API for event scheduling should not take such shortcuts
IMHO.  Most users don't schedule thousands of events at a time, however
they expect timeouts to be observed as rigorously as is possible given
the usual implementation constraints such as GC pauses.

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<https://bugs.python.org/issue31539>
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