On Tue, 2026-02-10 at 21:25 +0530, Durgamahesh Manne wrote: > I added fillfactor with less than 100 to existing table then ran vacuum full > to take effect > > How to ensure the applied fillfactor is working successfully > > A ratio of hot updates in catalog table should higher than value of > n_dead_tup or n_tup_upd? Or what ?
Run SELECT n_tup_upd, n_tup_hot_upd FROM pg_stat_all_tables WHERE relname = 'your table'; Then wait for an hour and run the query again. See how much "n_tup_upd" and "n_tup_hot_upd" increased in that hour. If the increase is about the same for both, almost all of your UPDATEs are HOT. Yours, Laurenz Albe
