Re: Limitations in FreeBSD

[Chuck Youse]

> > That�s why I�m looking for a way of having large mmap�able 
> > files. Are you saying that ALL Intel CPUs, including PIII, can only 
> > address 4 GB? 
> 
> That's correct; it's why the ia32 architecture has a '32' in its name.

I don't believe that's true.  I don't have any hard evidence within easy
reach, but with the introduction of the Pentium, the address space was
increased.  A user process, of course, can only have 4G of addressible
space (32-bit addresses) but the OS can map pages of the 4G space into a
larger area.

Something to do with 4MB pages instead of 4K pages.  

Again, I could be wrong on this one.

Chuck Youse



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