Re: [PHP] Re: 64bit vs. 32bit

2009-01-20 Thread Ross McKay
Micah Gersten wrote: >Linux can already address all the RAM on a 32 bit system with PAE. The >advantage of 64 bit with regards to RAM is that a single process can >address more than 2.5 - 2.7 GB of RAM. True, what I meant was processes on Linux will be able to address more. Good catch. Even wi

Re: [PHP] Re: 64bit vs. 32bit

2009-01-20 Thread Ross McKay
On Mon, 19 Jan 2009 18:39:40 -0800, James Colannino wrote: >I could be wrong, but I'll bet anything that Wine made use of the now >defunct vm86 component of the x86 architecture. [...] Yes, I believe that's true, and that it's not available when you compile for x86-64. However... why? If you rea

Re: [PHP] Re: 64bit vs. 32bit

2009-01-19 Thread James Colannino
Ross McKay wrote: > One restriction I know (knew?) of is that you can't run DOS programs > under Wine on 64-bit, but then... why? I could be wrong, but I'll bet anything that Wine made use of the now defunct vm86 component of the x86 architecture. That allowed the CPU to implement a "virtual mac

Re: [PHP] Re: 64bit vs. 32bit

2009-01-19 Thread Ashley Sheridan
On Mon, 2009-01-19 at 18:32 -0600, Micah Gersten wrote: > Ross McKay wrote: > > You'll also use a little more RAM due to pointer and integer sizes. > > However, Linux will be able to address more RAM on a >3GB system. > > > Linux can already address all the RAM on a 32 bit system with PAE. The

Re: [PHP] Re: 64bit vs. 32bit

2009-01-19 Thread Micah Gersten
Ross McKay wrote: > You'll also use a little more RAM due to pointer and integer sizes. > However, Linux will be able to address more RAM on a >3GB system. > Linux can already address all the RAM on a 32 bit system with PAE. The advantage of 64 bit with regards to RAM is that a single process c

[PHP] Re: 64bit vs. 32bit

2009-01-19 Thread Nathan Rixham
dbrooke wrote: Hello, I am interested in hearing opinions about if there are reasons to stay with a 32bit php/apache if there is 64bit options available. What are the pros/cons in running in the different architectures? (Fat Binary apache2, *nix platform) Thanks, Donovan just to add in; I us

[PHP] Re: 64bit vs. 32bit

2009-01-19 Thread Ross McKay
On Mon, 19 Jan 2009 14:56:36 -0600, dbrooke wrote: >I am interested in hearing opinions about if there >are reasons to stay with a 32bit php/apache if there >is 64bit options available. What are the pros/cons >in running in the different architectures? If you need to run some 32-bit stuff, you'll