Doug Y <[EMAIL PROTECTED]> writes: > I've seen a couple references to using ipcs to help properly size > shared_buffers.
I have not seen any such claim, and I do not see any way offhand that ipcs could help. > I tried all of the dash commands in the ipcs man page, and the only one > that might give a clue is ipcs -t which shows the time the semaphores > were last used. If you look at the example I give below, it appears as > if I'm only using 4 of the 17 semaphores (PG was started on Oct 8). This might tell you something about how many concurrent backends you've used, but nothing about how many shared buffers you need. regards, tom lane ---------------------------(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