Thank you! I just tried our benchmark and got a performance degration of around 28 %, which is way better than the last patch.
The simple query select * from generate_series(0, 10000000) shows roughly 18.9 % degradation on my test server.
By raising initial_allocation_allowance and allocation_allowance_refill_qty I can get it to 16 % degradation. So most of the degradation seems to be independent from raising the allowance.
I think we probably should investigate this further.
Regards
Arne
