| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, "Drouvot, Bertrand" <bertranddrouvot(dot)pg(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Introduce WAIT_EVENT_EXTENSION and WAIT_EVENT_BUFFER_PIN |
| Date: | 2023-05-18 16:28:20 |
| Message-ID: | CA+TgmoaYTd3YN3N3vtXi+X63ePOzAdiKfVYX-BROtpWSdF-Auw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, May 17, 2023 at 7:38 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2023-05-17 09:22:19 -0400, Robert Haas wrote:
> > Adding pgstat_get_wait_extension adds runtime cost for no corresponding
> > benefit. Having a special case in the code to avoid that seems worthwhile.
>
> I don't think that should ever be used in a path where performance is
> relevant?
I mean, I agree that it would probably be hard to measure any real
performance difference. But I'm not sure that's a good reason to add
cycles to a path where we don't really need to.
--
Robert Haas
EDB: http://www.enterprisedb.com
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