On Thu, Feb 11, 2021 at 9:13 AM Don Seiler <don@xxxxxxxxx> wrote: > My understanding is that these manual VACUUM ANALYZE jobs are not freezing rows that regular autovacuuming would otherwise be doing, which leads up to the big anti-wraparound job. They will freeze rows, but not aggressively. The antiwraparound vacuum might block on acquiring buffer pins, low level stuff like that. Perhaps you should change the vacuum_index_cleanup reloption to 'off' for the table, but make the scripted overnight vacuums directly specify INDEX_CLEANUP=on. That way index cleanup would still be performed for the vacuums that run overnight, though not for the antiwraparound vacuums, where the overhead may be a real issue. -- Peter Geoghegan
