RE: Performance degradation after upgrading from 9.5 to 14

[Zahir Lalani <ZahirLalani@oliver.agency>]

Same issue and took us ages to work out that is was JIT! The default is on, and setting off solves the problem. I have seen several blogs reporting the same and so wonder why this default is on?

 

Z

 

From: Олександр Янін <aleksandr.janin@xxxxxxxxxxxxx>
Sent: Monday, April 22, 2024 8:01 PM
To: Johnathan Tiamoh <johnathantiamoh@xxxxxxxxx>
Cc: pgsql-generallists.postgresql.org <pgsql-general@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: Performance degradation after upgrading from 9.5 to 14

 

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Try setting enable_memoize to off.
Our practice has shown that enabling this parameter by default often resulted in less than optimal query plans in the cache.

 

 

ср, 17 апр. 2024 г. в 20:13, Johnathan Tiamoh <johnathantiamoh@xxxxxxxxx>:

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 ?