pg_autovacuum not sleeping

From: "Brandon Metcalf" <bmetcalf(at)nortel(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: pg_autovacuum not sleeping
Date: 2005-09-20 20:56:04
Message-ID: Pine.LNX.4.58L.0509201551070.1182@cash.rhiamet.com
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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?

Thanks.

--
Brandon

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