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Re: Table not using tsvector gin index and performance much worsethan when it uses it. - Mailing list pgsql-performance

From rverghese
Subject Re: Table not using tsvector gin index and performance much worsethan when it uses it.
Date
Msg-id 1491436440096-5954503.post@n3.nabble.com
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In response to Re: Table not using tsvector gin index and performance much worse than when it uses it.  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: -EXT-Re: Table not using tsvector gin index andperformance much worse than when it uses it.
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Thanks for the response!

* We are on version 9.5.6

* Less than 10% of the table was updated today (between the time of the last
reindex to when performance deteriorated)

* autovacuum is on. I don't see an autoanalyze property in config but these
are the settings for analyze
/autovacuum_analyze_threshold = 3000     # min number of row updates before
analyze
#autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before
vacuum
#autovacuum_analyze_scale_factor = 0.1  # fraction of table size before
analyze
#autovacuum_freeze_max_age = 200000000  # maximum XID age before forced
vacuum
                                        # (change requires restart)/

* And this #gin_pending_list_limit = 4MB

* gin_clean_pending_list() is not available.

Will play with gin_pending_list_limit and see what that does.

Thanks!
RV



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