Advice on changing to 64 bits

[Jerry Feldman]

On 02/14/2009 10:52 AM, Joshua C. wrote:
> It is supposed to be faster than 32 bit but as a human you'll barely
> see any difference if at all. 
Actually, I did  a number of (unofficial) benchmarks a while ago when I 
worked for partner engineering at HP.  While most of the benchmarks ran 
well at 64-bit, one of my partner's tested their applications and found 
their 32-bit versions were significantly faster (I think this one was on 
HP-UX, but may have been Linux). Additionally, we found on the Digital 
Alpha that there were some applications that were slower in 64-bits. The 
Alpha was a full 64-bit chip with no native 32-bit mode.  For the most 
part, the personal workstation as you point out, won't make too much of 
a different. Just remember that a 64-bit OS can address the full 4GB of 
the OP's system where a 32-bit OS must use PAE to access over 3GB. This 
restriction only comes into play if you have a very memory intensive 
application.

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB  CA3B 4607 4319 537C 5846


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 251 bytes
Desc: OpenPGP digital signature
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20090214/47c16d67/attachment-0001.sig>