Hi, On Mon, Aug 17, 2026 at 03:36:03AM -0700, Zsolt Parragi wrote: > > > but 010_backup_straddle.pl does not. Should 010_backup_straddle.pl also > > > disable > > > bgwriter to preserve dirty pages? > > > > I'm not sure, does it need to? > > I think the test should be safe as-is, since we have more than enough > shared buffers. Even with 32mb shared buffers, the test reliably > errors out without the fix.
Couldn't the bgwriter still flush those dirty pages, regardless of the shared buffers size? On a slower BF animal, the launcher may remain paused long enough for additional bgwriter cycles to flush the pages. I'd still set bgwriter_lru_maxpages = 0 to make the test more deterministic. Regards, -- Bertrand Drouvot PostgreSQL Contributors Team RDS Open Source Databases Amazon Web Services: https://aws.amazon.com
