> > I'd say that your v6 patch is fine if the performance impact can be
> > shown to be small.
>
> To keep the ball rolling, I ran a pg_upgrade --link from a debug-enabled
> build on a database with 20000 empty tables.
>
> pg_upgrade took between 19 and 25 minutes, and I saw no noticeable effect
> of the patch. So I guess this is good to go.
>
> Yours,
> Laurenz Albe
Thanks for the pg_upgrade test.
Appreciated.