Re: autovacuum

Noah Freire wrote:
> <2008-10-29 11:09:03.453 PDT>DEBUG: 00000: accounts: vac: 16697969
> (threshold 6000050), anl: 16697969 (threshold 120000048)
> <2008-10-29 11:09:05.610 PDT>DEBUG: 00000: accounts: vac: 16699578
> (threshold 6000050), anl: 16699578 (threshold 120000048)
> <2008-10-29 11:10:03.563 PDT>DEBUG: 00000: accounts: vac: 16735906
> (threshold 6000050), anl: 16735906 (threshold 120000048)
>
> please check the first log message: the vacuum threshold is 6,000,050
> rows and the number of dead tuples is 16,697,969. Even though the number
> of dead_tuples is greater than the threshold the autovacuum is not being
> triggered for this table. So, besides this condition (dead_tuples >
> threshold) what else is taken into account by autovacuum?

What version of PostgreSQL?  Is the table being excluded? (see the
pg_autovacuum system table settings)  Are you sure that it's not getting
processed? Perhaps one worker is / has been churning on this table for a
  *LONG* time (that is a fairly big table).  What does it say for the
most recent autovacuum?

SELECT relid, schemaname, relname, last_vacuum, last_autovacuum  from
pg_stat_all_tables;