> > > 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.
Rebased v6 on current master.