Re: Adding wait events statistics

Hi,

On Wed, Jul 23, 2025 at 11:38:07AM -0400, Robert Haas wrote:
> I think it's probably a mistake to even be thinking about this in
> terms of wait events. It seems very reasonable to want more data about
> what PostgreSQL backends are doing, but I don't really see any reason
> why that should happen to line up with whatever wait events do. For
> instance, if you asked "what information is useful to gather about
> heavyweight locks?" you might say "well, we'd like to know how many
> times we tried to acquire one, and how many of those times we had to
> wait, and how many of those times we waited for longer than
> deadlock_timeout".

I did find this idea interesting, and gave it a stab in [1].

[1]: https://www.postgresql.org/message-id/aIyNxBWFCybgBZBS%40ip-10-97-1-34.eu-west-3.compute.internal

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com