On 4/10/07, tblader tblader@flambeau.com wrote:
Hello all. I have a centos 4.4 box (2.6.9-42.0.10.ELsmp) with 7gig of ram that doesn't seem to be using swap (also 7gig now). I say "seem" because I've noticed ram utilization run around 95% (with oracle and friends running) and then firing up a couple apps to use that last 5% will stop the machine dead in it's tracks.
How do you have your swap space allocated? Is it all 1 big 7G chunk, or broken up across disks somewhat? There used to be a limitation with having a single swap partition over 2G in size. I'm not certain if that still applies or not. If you really do require 7G of swap space, you'll probably see a benefit to keeping it spread across multiple spindles in 1-2G chunks. This will allow some sane system handling when swap usage is required, and it'll be able to essentially raid the swap space, for lack of a better description.