Legacy Query Optimizer Costing Parameters

Legacy Query Optimizer Costing Parameters

Warning: Do not adjust these query costing parameters. They are tuned to reflect Greenplum Database hardware configurations and typical workloads. All of these parameters are related. Changing one without changing the others can have adverse effects on performance.

cpu_index_tuple_cost

cpu_operator_cost

cpu_tuple_cost

cursor_tuple_fraction

effective_cache_size

gp_motion_cost_per_row

gp_segments_for_planner

random_page_cost

seq_page_cost