On Wed, Aug 4, 2021 at 7:39 AM Robert Haas <robertmh...@gmail.com> wrote: > How would it hurt? > > It's easy to see the harm caused by not shortening the line pointer > array when it is possible to do so: we're using up space in the page > that could have been made free. It's not so obvious to me what the > downside of shortening it might be.
I think that that's probably true. That in itself doesn't seem like a good enough reason to commit the patch. Maybe this really won't be difficult for Matthias. I just want to see some concrete testing, maybe with pgbench, or with an artificial test case. Maybe something synthetic that shows a benefit measurable in on-disk table size. Or at least the absence of any regressions. Something. -- Peter Geoghegan
