This patch adds a configuration parameter jit_warn_above_fraction that
will cause a warning to be logged if the fraction of time spent on
doing JIT is bigger than the specified one. For example, this can be
used to track down those cases where JIT ends up taking 90% of the
query runtime because of bad estimates...
--
Magnus Hagander
Me: https://www.hagander.net/
Work: https://www.redpill-linpro.com/
