Re: pg_autovacuum not sleeping

Brandon Metcalf wrote:
> We're using pg_autovacuum with PostgreSQL 8.0.3 and it isn't sleeping
> as long as the claims it will. For example,
>
> ...
> [2005-09-20 15:40:23 CDT] INFO: last_analyze_count: 21735550; last_vacuum_count: 21735009
> [2005-09-20 15:40:23 CDT] INFO: analyze_threshold: 40676; vacuum_threshold: 81352
> [2005-09-20 15:40:23 CDT] DEBUG: 347 All DBs checked in: 1428748500 usec, will sleep for 4886 secs.
> [2005-09-20 15:50:14 CDT] DEBUG: Performing: VACUUM ANALYZE "public"."model_lastexport"
>
> So, pg_autovacuum says it's going to sleep for 4886 seconds, but fires
> up again after just under 600 seconds.
>
> Can anyone explain what I'm seeing?

Yep, this was fixed in 8.0.X CVS in May, two days after the release of
8.0.3:

revision 1.27.4.4
date: 2005/05/11 17:58:32; author: momjian; state: Exp; lines: +11 -2
Fix pg_autovacuum -s flag to handle values > 2000 by using sleep()
instead of pg_usleep.

Backpatch to 8.0.X.

We are thinking of putting out an 8.0.4 in a few days, but until then
you can pull from CVS branch REL8_0_STABLE and use that fix in
pg_autovacuum.c.

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