On 4/17/24 19:13, Johnathan Tiamoh wrote: > Hello, > > > I performed an upgrade from postgresql-9.5 to postgresql-14 and the > performance has degraded drastically. > > Please, is they any advice on getting performance back ? > There's very little practical advice we can provide based on this report, because it's missing any useful details. There's a number of things that might have caused this, but we'd have to speculate. For example: 1) How did you upgrade? pg_dump or pg_upgrade? 2) Did you run ANALYZE to collect statistics after the upgrade? 3) Did you transfer the configuration, or did you just create a new cluster with the default values? 4) What exactly is slower? Queries? Inserts? 5) Can you quantify the impact? Is it 2x slower? 100x slower? regards -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
