Julien Rouhaud <rjuju...@gmail.com> writes: > On Fri, May 14, 2021 at 3:12 AM Bruce Momjian <br...@momjian.us> wrote: >> I was surprised it was ~2%.
> Just to be clear, the 2% was a worst case scenario, ie. a very fast > read-only query on small data returning a single row. As soon as you > get something more realistic / expensive the overhead goes away. Of course, for plenty of people that IS the realistic scenario that they care about max performance for. regards, tom lane