On 16 October 2019 12:57:03 CEST, Amit Kapila <amit.kapil...@gmail.com> wrote: >On Tue, Oct 15, 2019 at 7:13 PM Heikki Linnakangas <hlinn...@iki.fi> >wrote: >> All things >> considered, I'm not sure which is better. > >Yeah, this is a tough call to make, but if we can allow it to delete >the pages in bulkdelete conditionally for parallel vacuum workers, >then it would be better.
Yeah, if it's needed for parallel vacuum, maybe that tips the scale. Hopefully, multi-pass vacuums are rare in practice. And we should lift the current 1 GB limit on the dead TID array, replacing it with something more compact and expandable, to make multi-pass vacuums even more rare. So I don't think we need to jump through many hoops to optimize the multi-pass case. - Heikki
