PostgreSQL: Documentation: 12: 31.3. Configuration

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31.3. Configuration
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31.3. Configuration

The configuration variable jit determines whether JIT compilation is enabled or disabled. If it is enabled, the configuration variables jit_above_cost, jit_inline_above_cost, and jit_optimize_above_cost determine whether JIT compilation is performed for a query, and how much effort is spent doing so.

jit_provider determines which JIT implementation is used. It is rarely required to be changed. See Section 31.4.2.

For development and debugging purposes a few additional configuration parameters exist, as described in Section 19.17.

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31.2. When to JIT?	Home	31.4. Extensibility