Re: autovacuum logging, part deux.

On Thu, 2006-05-04 at 11:25 -0500, Larry Rosenman wrote:
> Rod Taylor wrote:
> > I don't know about anyone else, but the only time I look at that mess
> > is to find poor tuple/table or tuple/index ratios and other
> > indications that vacuum isn't working as well as it should be.
> >
> > How about this instead:
> >
> > Log when the actual autovacuum_vacuum_scale_factor (dead space cleaned
> > up) was more than 2 times the autovacuum_vacuum_scale_factor listed in
> > postgresql.conf. This means autovacuum isn't keeping up to what you
> > want it to.
> >
> > Another interesting case would be a large amount of empty space in the
> > index or table (say 3x autovacuum_vacuum_scale_factor). This may
> > indicate unnecessary bloat and something to fix.
> >
> > Aside from that, the raw numbers don't really interest me.
> >
>
> Does anyone think we should have a stats view for the last vacuum stats
> for each table?

This would actually suit me better as it would be trivial to plug into a
monitoring system with home-brew per table thresholds at that point.

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