Can anyone explain why our PostgreSQL query performance tanked after the latest migration and how to fix it without buying more RAM?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Can anyone explain why our PostgreSQL query performance tanked after the latest migration and how to fix it without buying more RAM?
1 real search · 1 real-search pass
PostgreSQL documentation EXPLAIN ANALYZE BUFFERS ANALYZE statistics pg_stat_statements work_mem query tuningGoogle ↗
OBSERVED
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
Classifying 1 queries…
Searches and sources
ChatGPT1 real searches · gpt-6
PostgreSQL documentation EXPLAIN ANALYZE BUFFERS ANALYZE statistics pg_stat_statements work_mem query tuning Google ↗
- pg_stat_statements · postgresql.org
- PostgreSQL: Documentation: 17: ANALYZE · postgresql.org
- PostgreSQL: Documentation: 18: ANALYZE · postgresql.org
- PostgreSQL: Documentation: 18: Chapter 14. Performance Tips · postgresql.org
- Slow Query Questions · wiki.postgresql.org
- Tuning Your PostgreSQL Server · wiki.postgresql.org
- Troubleshooting Guides - High Memory Utilization - Azure Database for PostgreSQL · learn.microsoft.com