Re: Gather performance analysis - Mailing list pgsql-hackers

From Robert Haas
Subject Re: Gather performance analysis
Date
Msg-id CA+TgmoZ0SE3O6qNRcELZh=D6XRTtHxCiLNPm-PD2jORsqpeELw@mail.gmail.com
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In response to Re: Gather performance analysis  (Tomas Vondra <tomas.vondra@enterprisedb.com>)
Responses Re: Gather performance analysis
List pgsql-hackers
On Thu, Sep 23, 2021 at 5:36 PM Tomas Vondra
<tomas.vondra@enterprisedb.com> wrote:
> (c) This can't explain the slowdown for cases without any Gather nodes
> (and it's ~17%, so unlikely due to binary layout).

Yeah, but none of the modified code would even execute in those cases,
so it's either binary layout, something wrong in your test
environment, or gremlins.

-- 
Robert Haas
EDB: http://www.enterprisedb.com



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