On 25/05/10 17:20, Jan de Groot wrote:
On Mon, 2010-05-24 at 17:05 +0200, Nicky726 wrote:
I have experimentally found out, that 64 bit Linux distro uses like 40 -- 80 %
more of RAM than 32 bit. Now it seemed to be both aplication and distro
dependant, with Arch being on the better side. Though I've got to say again, it
was not a benchmark, just my personal experiment.
As for me, if I had a machine with plenty RAM (that is from my perspective
~GB), than I would choose 64 bit. If I had like 1 -- 2 GB, than I would
definitely go 32 bit.
Hope I did understand your question right.
Depending on the software you run, programs can take more memory due to
larger integers and pointer sizes. If memory usage is a problem, go for
a 64bit kernel with 32bit userland. Memory allocation above 896MB is
much more efficient on 64bit kernels because you don't have to use the
"highmem" method to access that.
And here is how to do 64 bit kernel with 32 bit userland without even
noticing from a user perspective:
http://allanmcrae.com/2010/02/transparent-x86_64-kernel-on-an-i686-userland/
From an admin perspective, you need to update the kernel yourself (or
create a repo just for the 64bit kernel and modules).
