On 2016-12-20 09:59:43 +0100, Pavel Stehule wrote: > In this case some benchmark can be very important (and interesting). I am > not sure if faster function execution has significant benefit on Vulcano > like executor.
It's fairly to see function calls as significant overhead. In fact, I moved things *away* from a pure Vulcano style executor, and the benefits weren't huge, primarily due to expression evaluation overhead (of which function call overhead is one part). After JITing of expressions, it becomes even more noticeable, because the overhead of the expression evaluation is reduced. I don't quite see why a Vulcano style executor should make function call overhead meaningless? Regards, Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
