Re: Autovacuum launcher doesn't notice death of postmaster immediately

Tom Lane wrote:
> "Andrew Hammond" <andrew(dot)george(dot)hammond(at)gmail(dot)com> writes:
>> Hmmm... it seems to me that points new users towards not using
>> autovacuum, which doesn't seem like the best idea. I think it'd be
>> better to say that setting the naptime really high is a Bad Idea.
>
> It seems like we should have an upper limit on the GUC variable that's
> less than INT_MAX ;-). Would an hour be sane? 10 minutes?
>
> This is independent of the problem at hand, though, which is that we
> probably want the launcher to notice postmaster death in less time
> than autovacuum_naptime, for reasonable values of same.

Do we need a configurable autovacuum naptime at all? I know I put it in
the original contrib autovacuum because I had no idea what knobs might
be needed. I can't see a good reason to ever have a naptime longer than
the default 60 seconds, but I suppose one might want a smaller naptime
for a very active system?