Re: Performance degradation after upgrading from 9.5 to 14 - Mailing list pgsql-general

From Christophe Pettus
Subject Re: Performance degradation after upgrading from 9.5 to 14
Date
Msg-id 36ABD763-8D40-465B-8013-3C50712259E3@thebuild.com
Whole thread Raw
In response to Performance degradation after upgrading from 9.5 to 14  (Johnathan Tiamoh <johnathantiamoh@gmail.com>)
List pgsql-general

> On Apr 17, 2024, at 10:13, Johnathan Tiamoh <johnathantiamoh@gmail.com> wrote:
> 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 ?

Run:

    VACUUM (ANALYZE, VERBOSE);

More seriously (although make sure you did do that), "performance" is made up of a lot of components.  There's no "go
faster"switch in postgresql.conf you may have neglected.  You'll need to do a bit of investigation first to find out
whatis running slow, where it should be fast: I/O performance?  Query times?  Once you have that information, the
communitycan provide much more assistance. 


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