On Mon, Dec 12, 2016 at 6:14 PM, Andres Freund <
andres@anarazel.de> wrote:
>
>
> For Q1 I think the bigger win is JITing the transition function
> invocation in advance_aggregates/transition_function - that's IIRC where
> the biggest bottleneck lies.
>
Yeah, we bundle the agg core into our expr work... no point otherwise since we do
it for OLAP.
As for experience, I think you have found out for yourself. There is a lot that
can be done and heuristics are involved in many places to decide whether
to jit fully, partially, or not at all. But it looks like you have a solid basis now
to proceed and explore the beyond :-)
Send me private email if you have a particular question.
Regards,
-cktan
