On Wed, 2008-04-30 at 12:27 -0400, Tom Lane wrote:
> Alvaro Herrera <alvherre@commandprompt.com> writes:
> > I still think that the autovac is dying before completing the task. Did
> > you investigate whether there are "ERROR" messages coming from
> > autovacuum? No PG crashes would happen.

There are no ERROR messages at all. Sample log snippet:

2008-04-30 12:03:36 EDT LOG: autovacuum: processing database
"template1"
2008-04-30 12:04:36 EDT LOG: autovacuum: processing database
"itvtrackdatapos"
2008-04-30 12:05:36 EDT LOG: autovacuum: processing database
"template1"
2008-04-30 12:06:36 EDT LOG: autovacuum: processing database
"itvtrackdatapos"
2008-04-30 12:07:36 EDT LOG: autovacuum: processing database
"template1"
2008-04-30 12:08:36 EDT LOG: autovacuum: processing database
"itvtrackdatapos"
2008-04-30 12:09:36 EDT LOG: autovacuum: processing database
"template1"
2008-04-30 12:10:36 EDT LOG: autovacuum: processing database
"itvtrackdatapos"


> I'm noticing though that the 8.1 logic pays attention to both
> datvacuumxid and datfrozenxid. Could we see the age() of both of
> those columns for all the databases.

The are all identical:

itvtrackdata=> select datname,age(datfrozenxid),age(datvacuumxid) from
pg_database;
datname | age | age
------------------+-----------+-----------
postgres | 295995059 | 295995059
itvtrackdata | 295995059 | 295995059
itvtrackdatauser | 295995059 | 295995059
itvtrackdatapos | 295995059 | 295995059
template1 | 295995059 | 295995059
template0 | 295995059 | 295995059
(6 rows)

itvtrackdata=>


--Ian



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