On Wed, Feb 12, 2020 at 10:23:22AM -0700, Michael Lewis wrote:
>It may also be worth noting that it is possible to make autovacuum/analyze
>more aggressive, perhaps only on the tables that see large changes in data
>that might result in a statistics issue. If you could share a query,
>explain analyze output, and pseudo code or at least description of what
>sort of bulk operations are being done, then more insight could be offered.
Another thing you can do is deploy auto_explain, and log explain plan
for long-runnning queries. That won't fix the root cause, but it will
help you with confirming the root cause - you'll see the query plan,
which should give you enough context.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services