Rod Taylor <[EMAIL PROTECTED]> writes:
> The kernel also starts to play a significant role with a high number of
> connections. Some operating systems don't perform as well with a high
> number of processes (process handling, scheduling, file handles, etc.).

Right; the main problem with having lots more backends than you need is
that the idle ones still eat their share of RAM and open file handles.

A connection pooler uses relatively few resources per idle connection,
so it's a much better impedance match if you want to service lots of
connections that are mostly idle.

                        regards, tom lane

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