Hi, all, > On Tue, 10 Mar 2026 at 23:22, Induja Sreekanthan <[email protected]> wrote: > > > > Hi, > > > > I found an issue where Postgres (with effective_io_concurrency of 64 or higher) runs out of local buffers during a sequential scan on a temporary table with TOAST data. > >
Just to confirm, I have a production db (20TB, high concurrency, lot's of updates/merges) that is a heavy user of temp tables running into this as well with io_method='io_uring'. This started after having upgraded PostgreSQL 18 (from 17). For now, the problem disappears again when switching to io_method='worker' Thank you for providing the patches, kind regards, Feike Steenbergen
