"Tomeh, Husam" <htomeh@xxxxxxxxxxx> writes: > I just installed postgres 8.1.1 on a dual optron Linux box running Linux > 4 advanced server, with 32GB of RAM and 2GB of swap. > I'm trying to allocate 24 GB as shared_bufferes. I'm getting an error > that I can not allocate memory (see below). While this doesn't answer your question: why are you trying to do that? AFAIK there is no evidence whatever that that's a good idea. Try measuring performance at, say, 1Gb, 8Gb, 16Gb of shared buffers and see where the trend is going before you waste a lot of time fixing the kernel parameters. regards, tom lane
