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Re: Why doesn't autovacuum/analyze run in due time after calling pg_stat_reset?

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On 8/20/23 22:31, Rihad wrote:
On 8/21/23 00:15, Adrian Klaver wrote:
On 8/20/23 12:10, Rihad wrote:
On 8/20/23 20:22, Adrian Klaver wrote:
On 8/18/23 22:35, Rihad wrote:
On 8/17/23 13:01, rihad wrote:



Hard to say without seeing the actual settings in postgresql.conf that match:

https://www.postgresql.org/docs/current/runtime-config-autovacuum.html#GUC-AUTOVACUUM-VACUUM-SCALE-FACTOR


Most importantly:

autovacuum

and

track_counts

https://www.postgresql.org/docs/current/runtime-config-statistics.html#GUC-TRACK-COUNTS


They are both on and set as per default. Autovac/analyze continue running on some tables after pg_stat_reset. Just not on all of them, even thought they should judging by live/dead tuples calculation.


foo=> show track_counts;
track_counts
--------------
on
(1 row)

foo=> show autovacuum;
autovacuum
------------
on
(1 row)

How about the rest of the settings at?:

https://www.postgresql.org/docs/current/runtime-config-autovacuum.html

Have the storage parameters for the tables been changed per?:

https://www.postgresql.org/docs/current/sql-createtable.html#SQL-CREATETABLE-STORAGE-PARAMETERS

In psql you can do:

\d+ <table_name>

The setting if changed will show up as Options: <setting>

Also are there include directives in use per?:

https://www.postgresql.org/docs/current/config-setting.html#CONFIG-INCLUDES

You can see by looking at the sourcefile field in pg_settings:

https://www.postgresql.org/docs/current/view-pg-settings.html







There are still many tables waiting for their turn, which is long due.

Although there are some tables having only 60-70 (not 60-70K) n_live_tup that have had autovacuum run on them. Weird.









--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx






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