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This adds simple cost based plan time decision about whether JIT should be performed. jit_above_cost, jit_optimize_above_cost are compared with the total cost of a plan, and if the cost is above them JIT is performed / optimization is performed respectively. For that PlannedStmt and EState have a jitFlags (es_jit_flags) field that stores information about what JIT operations should be performed. EState now also has a new es_jit field, which can store a JitContext. When there are no errors the context is released in standard_ExecutorEnd(). It is likely that the default values for jit_[optimize_]above_cost will need to be adapted further, but in my test these values seem to work reasonably. Author: Andres Freund, with feedback by Peter Eisentraut Discussion: https://postgr.es/m/20170901064131.tazjxwus3k2w3ybh@alap3.anarazel.de |
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adt | ||
cache | ||
error | ||
fmgr | ||
hash | ||
init | ||
mb | ||
misc | ||
mmgr | ||
resowner | ||
sort | ||
time | ||
.gitignore | ||
errcodes.txt | ||
Gen_dummy_probes.pl | ||
Gen_dummy_probes.sed | ||
Gen_fmgrtab.pl | ||
generate-errcodes.pl | ||
Makefile | ||
probes.d |