Re: More logging for autovacuum

Gregory Stark wrote:
> I'm having trouble following what's going on with autovacuum and I'm finding
> the existing logging insufficient. In particular that it's only logging vacuum
> runs *after* the vacuum finishes makes it hard to see what vacuums are running
> at any given time. Also, I want to see what is making autovacuum decide to
> forgo vacuuming a table and the log with that information is at DEBUG2.
>
> So I would like to suggest adding two options:
>
> log_autovacuum_jobs - output every time a vacuum or analyze *starts*
>
> log_autovacuum_level - set the log level for the autovacuum process
>
> I would also suggest raising the level of the DEBUG2 message indicating why
> tables were chosen or not. At least to DEBUG1 if not to INFO.
>
> Am I missing anything? Are there ways to get this info already that I'm
> missing? I imagine it would be pretty simple to add these and I'll be happy to
> do it and send the patch to -patches assuming others (Alvaro? :) agree.

I think this sounds good. There was talk a while ago about need a
special log level setting just for autovacuum, but nobody did the leg
work.