Peter,

Is it intentional that effective_cache_size is a real (as opposed to integer)? The initial revision of guc.c already has it that way, so it was probably blindly adapted from the previous adhockery that had all planner variables be doubles.



I beleive that it's a real because the other query estimate variables are reals. Might be worth checking the estimation code to make sure that changing the type won't break anything.

--Josh

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