Horton

Re: postmaster uses more CPU in 18 beta1 with io_method=io_uring

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: MARK CALLAGHAN <mdcallag@gmail.com>, pgsql-hackers@lists.postgresql.org, Heikki Linnakangas <hlinnaka@iki.fi>, Tomas Vondra <tomas@vondra.me>, Nathan Bossart <nathandbossart@gmail.com>
Date: 2025-06-05T16:47:52Z
Lists: pgsql-hackers 
Andres Freund <andres@anarazel.de> writes:
> I think this is a big enough pitfall that it's, obviously assuming the patch
> has a sensible complexity, worth fixing this in 18. RMT, anyone, what do you
> think?

Let's see the patch ... but yeah, I'd rather not ship 18 like this.

			regards, tom lane

Commits

  1. aio: Combine io_uring memory mappings, if supported