Speed v Version

[Dave Hodgkinson]

On 1 Jun 2011, at 17:26, Dominic Thoreau wrote:

> On 1 June 2011 17:12, Dave Hodgkinson <davehodg at gmail.com> wrote:
>> 
>> 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
> 
> Physical machines? Pah!
> 
> dominic at dominic-virtual-laptop:~$ uname -p
> unknown

It's a Z80!

My BBC sandbox is sane at least:

$ uname -p
x86_64