Re: We need to log aborted autovacuums

Josh Berkus <josh@agliodbs.com>

From: Josh Berkus <josh@agliodbs.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2010-11-17T23:31:44Z
Lists: pgsql-hackers
> It's hard to tell, because you're just handwaving about what it is you
> think isn't being logged; nor is it clear whether you have any evidence
> that locks are the problem.  Offhand I'd think it at least as likely
> that autovacuum thinks it doesn't need to do anything, perhaps because
> of a statistics issue.  There *is* an elog(DEBUG3) in autovacuum.c
> that reports whether autovac thinks a table needs vacuumed/analyzed ...
> maybe that needs to be a tad more user-accessible.

Yeah, it would be really good to be able to log that without bumping the
log levels of the server in general to DEBUG3.  On a busy production
server, using any of the DEBUG levels is pretty much out of the question
... they can produce up to 1GB/minute in output.

-- 
                                  -- Josh Berkus
                                     PostgreSQL Experts Inc.
                                     http://www.pgexperts.com