Planning time

Nikolay and Michael discuss planning time in Postgres — what it is, how to spot issues, its relationship to things like partitioning, and some tips for avoiding issues.
 
Here are some links to things they mentioned:

• Query Planning (docs) https://www.postgresql.org/docs/current/runtime-config-query.html
• Are there limits to partition counts? (Blog post by depesz) https://www.depesz.com/2021/01/17/are-there-limits-to-partition-counts
• Nikolays recent experiment https://postgres.ai/chats/01920004-a982-7896-b8cb-dfd2406359b0
• PgBouncer now supports prepared statements https://github.com/pgbouncer/pgbouncer/releases/tag/pgbouncer_1_21_0
• “The year of the lock manager’s revenge” (from blog post by Jeremy Schneider) https://ardentperf.com/2024/03/03/postgres-indexes-partitioning-and-lwlocklockmanager-scalability
• pg_stat_statements.track_planning https://www.postgresql.org/docs/current/pgstatstatements.html#id-1.11.7.42.9.2.4.1.3
• pg_hint_plan https://github.com/ossc-db/pg_hint_plan

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What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc!

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Postgres FM is produced by:

• Michael Christofides, founder of pgMustard
• Nikolay Samokhvalov, founder of Postgres.ai

With special thanks to:

• Jessie Draws for the elephant artwork