Re: Some performance degradation in REL_16 vs REL_15

From: David Rowley <dgrowleyml(at)gmail(dot)com>
To: "Anton A(dot) Melnikov" <a(dot)melnikov(at)postgrespro(dot)ru>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Some performance degradation in REL_16 vs REL_15
Date: 2023-10-12 08:20:36
Message-ID: CAApHDvp2FBQpOrtTUcbHY28nnXn8xHdNNdjAJNUS34V3oiqGQw@mail.gmail.com
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On Thu, 12 Oct 2023 at 21:01, Anton A. Melnikov
<a(dot)melnikov(at)postgrespro(dot)ru> wrote:
>
> Greetengs!
>
> Found that simple test pgbench -c20 -T20 -j8 gives approximately
> for REL_15_STABLE at 5143f76: 336+-1 TPS
> and
> for REL_16_STABLE at 4ac7635f: 324+-1 TPS
>
> And is it worth spending time bisecting for the commit where this degradation may have occurred?

It would be interesting to know what's to blame here and if you can
attribute it to a certain commit.

David

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