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Re: A serious change in performance between PG 15 and PG 16, 17, 18. - Mailing list pgsql-performance

From David G. Johnston
Subject Re: A serious change in performance between PG 15 and PG 16, 17, 18.
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Msg-id CAKFQuwYPyO+S+Hrb03pPctKP3y6LRoM1OvXBwiB3N32UUy5pzQ@mail.gmail.com
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In response to A serious change in performance between PG 15 and PG 16, 17, 18.  (Clive Boughton <clive.boughton@softimp.com.au>)
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On Sunday, February 15, 2026, Clive Boughton <clive.boughton@softimp.com.au> wrote:

For reasons of security I can't provide all the SQL code, but I can (if it is necessary) provide an outline of what the code does.

If you cannot provide at least explain analyze, before and after, the odds of making progress on this is greatly diminished.  A minimal reproducer you can verify and share is exponentially better though.

It’s probably worth ensuring JIT is disabled even going off this minimal information.

David J.

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