Port-i386 archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: Install i386 or amd64?



On Jan 29, 2014, at 15:07, jmitchel%bigjar.com@localhost wrote:

>> On Tue, Jan 28, 2014 at 06:26:13AM -0500, Jason Mitchell wrote:
>>> 
>>> Not to advocate i386 over amd64, but doesn't NetBSD/i386 support PAE and
>>> thus can access >2GB of RAM?
>>> 
>> 
>> You are still limited to a 32bit address space in the process so you
>> still can't go over the 4Gb memory limit and that is divided between
>> kernel and user space hence why a process gets 2(ish)Gb.  These
>> limitations don't apply to a true 64bit system.
>> 
>> --
>> Brett Lymn
>> Staple Guns: because duct tape doesn't make that KerCHUNK sound - xkcd.com
>> 
> Please don't post about things that you don't understand. Here's the
> information from Wikipedia:
> 
> http://en.wikipedia.org/wiki/Physical_Address_Extension
> 
> And here's the first four lines:

Did you even read the whole thing? Because you should... the first four 
lines don't tell all there is to know about it. Read further and be 
educated: "The 32-bit size of the virtual address is not changed, so 
regular application software continues to use instructions with 32-bit 
addresses and (in a flat memory model) is limited to 4 gigabytes of 
virtual address space."

Just as Brett said: "You are still limited to a 32bit address space in 
the process so you still can't go over the 4Gb memory limit"



Home | Main Index | Thread Index | Old Index