Re: We need to log aborted autovacuums

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: We need to log aborted autovacuums
Date: 2010-11-17 23:31:44
Message-ID: 4CE465E0.8090102@agliodbs.com
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> 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

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