Martijn van Oosterhout <kleptog@svana.org> writes:
> I've considered whether it's worthwhile going to other way: getting the
> IndexScan executer node to uses getmulti to reduce index AM overhead.
> But that requires backward scan support also...

I think Heikki got most of the low-hanging fruit already with that patch
for page-at-a-time scanning in btree.  There's some wasted overhead just
from multiple levels of function call, but I doubt it's really a big
deal anymore.

                        regards, tom lane

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