On Mon, Nov 12, 2007 at 11:31:59AM -0600, Scott Marlowe wrote: > On Nov 12, 2007 11:29 AM, Sam Mason <sam@xxxxxxxxxxxxx> wrote: > > You don't need a 32bit kernel to support 8GB of memory should you? As > > long as the kernel supports PAE that should be enough to make use of it. > > You only need a 64bit address space when each process wants to see more > > than ~3GB of RAM. > > There's a performance hit for using PAE. Not sure what it is, but I > recall it being the in the 5 to 10% range. And what's the performance hit of using native 64bit code? I'd guess similar, moving twice as much data around with each pointer has got to affect things. Sam ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
