Re: about the advantage of 64 bit processor

[mike <mike503@gmail.com>]

I'm still seeing some things (like LinuxThreads, and some clustered
filesystem products) that will only run on x86, not x86_64 based
kernels - and I've often wondered about switching back to normal
32-bit x86 (but on an amd64 chip.) I hear the performance is still
better than a normal 32-bit chip... I guess the main difference is
that I wouldn't be able to address more than 2GB RAM.

Isn't that right (someone else)?

Other than that, I'm not sure if there's much difference... I haven't
seen any benchmarks showing amd64 in 64-bit totally outperforming
amd64 in 32-bit mode myself...

I'd like to hear someone else's opinion (perhaps more knowledgable on
the architecture differences) - I was thinking about bringing this up
myself as I might have to use x86 for certain [proprietary] filesystem
products, but I wouldn't want to waste a lot of resources or miss out
on the opportunity to address additional RAM (especially if I want to
use something like memcached, where I can give it all the extra RAM I
have in each machine as part of the distributed cache)

Thanks,
mike

On 11/30/05, JULIO Cayo <cubiertasnuevas@gmail.com> wrote:
> Hi, I don't speak Inglish, but I try.
> I have an amd64 (+3200) processor (512 mb) , and obviusly , debian
> sarge amd64. My question is: which program do you experiment a big
> difference beetwen 32 bit and 64 bit.
> I use a common aplication and the performce is equal to 32 bit program.
> Thanks.
>
> Sorry for my Inglish.
>
>