On Sat, 25 Jul 2020 at 10:37, Tom Lane <tgl@xxxxxxxxxxxxx> wrote: > > David Rowley <dgrowleyml@xxxxxxxxx> writes: > > However, for now, you might just want to try raising various jit > > thresholds so that it only is enabled for more expensive plans. > > Yeah. I'm fairly convinced that the v12 defaults are far too low, > because we are constantly seeing complaints of this sort. I think plan cost overestimation is a common cause of unwanted jit too. It would be good to see the EXPLAIN ANALYZE so we knew if that was the case here. David