On 3/9/18 15:42, Peter Eisentraut wrote:
> The default of jit_above_cost = 500000 seems pretty good.  I constructed
> a query that cost about 450000 where the run time with and without JIT
> were about even.  This is obviously very limited testing, but it's a
> good start.

Actually, the default in your latest code is 100000, which per my
analysis would be too low.  Did you arrive at that setting based on testing?

Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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