> I recently took a system from MySQL to Postgres. Same HW, SW, same data. > The major operations where moderately complex queries (joins on 8 tables). > > The results we got was that Postgres was fully 3 times slower than MySql. > We were on this list a fair bit looking for answers and tried all the > standard answers. It was still much much much slower.
I'm curious what the usage was. How many concurrent processes were performing the complex queries? I've heard that Postgres does better when the number of concurrent users is high and MySQL does better when the number is low. I have no idea if that is true or not. Michael ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match