Am 06.12.2008 um 01:02 schrieb Ignacio Vazquez-Abrams: > On Fri, 2008-12-05 at 23:57 +0000, Michael Holmes wrote: >> 2008/12/5 Matt <lm7812 at gmail.com>: >>> I have a server running Centos 4.7 32bit. Will moving from 4Gig of >>> RAM to 8Gig do any good? Since its 32bit I assume it will only be >>> able to address the first 4Gig not? >> As long as you are using a SMP kernel you can use up to 64GB of RAM >> (though each proccess can only address 4GB of this). So if you can >> find any trace of "SMP" in the uname (grep is your friend) then it >> should work fine. > > PAE, not SMP. > He should be able to replace the kernel via rpm -e and rpm -i That said, I doubt he'll actually see a benefit. PAE is slow. If you want to see a real performance-gain, install 5.2 x86-64. cheers, Rainer