Peter Geoghegan <pg(at)bowt(dot)ie> writes:
> Are you aware of Andres' commit 02fea8fd? That work prevented exactly
> the same set of symptoms (the same index-only scan create_index
> regressions),
Hm. I'm starting to get the feeling that the real problem here is
we've "optimized" the system to the point where repeatable results
from VACUUM are impossible :-(
regards, tom lane