[HACKERS] About hierarchical_query of Oracle

    Who can tell me how to complete oracle's hierarchical_query through postgresql。 

[HACKERS] A multi CUP performance problem

I found postgresql running on the multi CPU machine doesn't have better performance than single CPU machine. Can you explain the reason? And how to resolve the problem? In the Todo list, I read the below message: Add code to detect an SMP machine and handle spinlocks accordingly from d