On Mon, Feb 22, 2016, at 02:30 PM, Jeff Janes wrote:
> It charges 0.1 CPU_operator_cost, while reality seemed to be more like 6 CPU_operator_cost.
fdy=> select name, setting, boot_val from pg_settings where name ~
'cpu';
name | setting | boot_val
----------------------+---------+----------
cpu_index_tuple_cost | 0.005 | 0.005
cpu_operator_cost | 0.0025 | 0.0025
cpu_tuple_cost | 0.01 | 0.01
(3 rows)
Inspired, I changed cpu_index_tuple_cost to 0.1 (default: 0.005). It
"fixed" my problem by preventing the BitmapAnd.
Is this dangerous?
