On Sunday, March 23, 2025, David G. Johnston <david.g.johns...@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.
