On 2018-04-18 17:35:31 +0200, Andreas Joseph Krogh wrote:> With jit=on:> https://explain.depesz.com/s/vYB> Planning Time: 0.336 ms > JIT:> Functions: 716> Generation Time: 78.404 ms> Inlining: false> Inlining Time: 0.000 ms> Optimization: false> Optimization Time: 43.916 ms> Emission Time: 600.031 ms
Any chance this is a debug LLVM build?
> What's the deal with jit making it slower?
JIT has cost, and sometimes it's not beneficial. Here our heuristicswhen to JIT appear to be a bit off. In the parallel world it's worsebecause the JITing is duplicated for parallel workers atm.