31.3. Configuration
The configuration variablejit determines whetherJIT compilation is enabled or disabled. If it is enabled, the configuration variablesjit_above_cost,jit_inline_above_cost, andjit_optimize_above_cost determine whetherJIT compilation is performed for a query, and how much effort is spent doing so. jit_provider determines whichJIT implementation is used. It is rarely required to be changed. SeeSection 31.4.2. For development and debugging purposes a few additional configuration parameters exist, as described inSection 19.17.