On Mon, 2010-05-24 at 23:48 +0200, Frédéric Perrin wrote: > Le lundi 24 à 0:29, C Anthony Risinger a écrit : > > On Mon, May 24, 2010 at 12:02 AM, Keith Hinton <keithint1234@xxxxxxxxx> wrote: > >> I had a question about the sixty four bit port of Arch in general > >> so figured this would be an okay place besides IRC to obtain any > >> help I needed. I wanted to find out ruffly how much memory Arch > >> sixty four will use for any program in general, regardless of > >> GUI/console? > > > > i really don't think there is a way to answer this. i'm not an expert > > on hardware, but 64bit applies to the CPU, nothing else. a larger > > bottom level cache allows the CPU to view/consume more data/bits at > > once, and to perform better on precision mathematics like heavy > > floating point operations. i don't see it having much-to-any effect > > on RAM usage, but again maybe i'm missing something and then someone > > will surely correct me :-) > > On a 64 bit machine, in « char *p; », p will use 64 bits (8 bytes), > instead of 4 bytes in a 32 bits machine [I'm talking about p, not about > *p which doesn't look like it exists]. Gary Wright seems to be saying > that the impact is negligible. Nicky726 seems to be saying that there > is a difference of up to 80%. I am surprised by such a claim, but there > seems to be anecdotes on Google of people seeing the same thing. As I > don't have a 64 bits machine, I can't test for myself. > This is really strange. I am running a 64 bit system and after a fresh start (Including gnome, pulseaudio, dropbox, rhythmbox,uget,transmission) it consumes between 700 and 800MB ram. I never noticed any increase in ram usage between 32bit and 64bit (Have been running a 32bit version of another distro before). Therefore I would suggest you using 64bit. Greetings Benedikt
