Speed v Version

[Dave Hodgkinson]

On 1 Jun 2011, at 14:13, Nicholas Clark wrote:

> On Wed, Jun 01, 2011 at 02:00:14PM +0100, Dave Hodgkinson wrote:
>> 
>> On 1 Jun 2011, at 11:57, Dave Lambley wrote:
>>> 
>>> My former employer did some benchmarking of different versions of Perl, used inside mod_perl.  Perl 5.10.x proved faster than 5.8.x, and 64 bit was faster than 32.  This was for a CPU bound application though, which it sounds like your's is not.
> 
> This was x86 vs x86_64? As I understand it, even though it can be on the same
> chip, the latter CPU architecture has far more general purpose registers,
> which permits compilers to generate better code...
> 

Also note on my perfectly 64 bit macbook pro:

$ uname -p
i386