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

Re: AMD64-generic doesn't see all 4GB RAM?

Freddie Cash <fcash-ml <at> sd73.bc.ca> writes:

> On Wednesday 08 November 2006 01:08 am, Gabor Gombas wrote:
> > On Tue, Nov 07, 2006 at 12:27:46PM +0000, Jo Shields wrote:
> > > 32-bit OSen have a theoretical limit of 4GiB addressable memory.
> >
> > PAE gives you 64 GiB physical memory on 32-bit processors that support
> > it.
> Yes, but each process is still limited to 4 GB each.  PAE just lets you 
> run multiple processes each with their own 4 GB of memory space. 
PAE doesn't have any baring on this.  Each process has up to 4 GiB (really 3 on 
Linux by default, but theoretically 4), regardless of physical RAM.  You could 
give and allocate pages for 4GiB for every process with only a few megs of 
physical memory, provided you had enough backing store (hard drive) to hold it 

Reply to: