Cédric Villemain wrote:
>
>
> Le 17/06/2015 23:10, Alvaro Herrera a écrit :
> > Tom Lane wrote:
> >> launcher_determine_sleep() does have a minimum sleep time, and it seems
> >> like we could fairly cheaply guard against this kind of scenario by also
> >> enforcing a maximum sleep time (of say 5 or 10 minutes). Not quite
> >> convinced whether it's worth the trouble though.
> >
> > Yeah, the case is pretty weird and I'm not really sure that the server
> > ought to be expected to behave. But if this is actually the only part
> > of the server that misbehaves because of sudden gigantic time jumps, I
> > think it's fair to patch it. Here's a proposed patch.
>
> Does that still respect an autovacuum_naptime (GUC) greater than 5 minutes ?
Yes, sure. The launcher will wake up, see time-to-vacuum further away,
then continue sleeping.
--
Álvaro Herrera http://www.2ndQuadrant.com/
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