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Re: autovacuum

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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;

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