Now is the time to test this. From my early experiments, you can expect to get speedups for queries that last longer than a few seconds. A lot depends on whet

Now is the time to test this. From my early experiments, you can expect to get speedups for queries that last longer than a few seconds. A lot depends on whether I/O, caching, etc. dominates. The only disadvantage is that it takes time to do the JIT compilation, so if the query is already fast, JIT compilation will probably make it slower. Hence, there are ways to adjust when it should be used.