On Mon, Nov 21, 2022 at 10:32 AM Tom Lane <t...@sss.pgh.pa.us> wrote: > Robert Haas <robertmh...@gmail.com> writes: > > Is there any reason to tie this into page costs? I'd be more inclined > > to just make it a hard limit on the number of pages. I think that > > would be more predictable and less prone to surprising (bad) behavior. > > Agreed, a simple limit of N pages fetched seems appropriate. > > > And to be honest I would be inclined to make it quite a small number. > > Perhaps 5 or 10. Is there a good argument for going any higher? > > Sure: people are not complaining until it gets into the thousands. > And you have to remember that the entire mechanism exists only > because of user complaints about inaccurate estimates. We shouldn't > be too eager to resurrect that problem. > > I'd be happy with a limit of 100 pages.
OK. -- Robert Haas EDB: http://www.enterprisedb.com
