On Sunday, March 23, 2025, David G. Johnston <
david.g.johnston@gmail.com> wrote:
Maybe IOS helps though I do wonder whether a sequential scan skips over known all-dead pages making that relative benefit go away.
Well, no, since it tracks known visible, not known non-visible, though for something like a fast exists test with no where clause if the VM had any 1 bits the answer to the exists would be yes. No idea if we take that shortcut.
David J.