On Fri, Feb 17, 2023 at 10:44:49PM +0100, Daniel Gustafsson wrote:
> In the trivial case, a single database, I don't see a reduction of performance
> over the current approach. In a cluster with 100 (empty) databases there is a
> ~15% reduction in time to run a --check pass. While it won't move the earth in
> terms of wallclock time, consuming less resources on the old cluster allowing
> --check to be cheaper might be the bigger win.
Nice! This has actually been on my list of things to look into, so I
intend to help review the patch. In any case, +1 for making pg_upgrade
faster.
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com