Re: 2nd attemt at reviving the filesystem limit discussion.

[Peter 'p2' De Schrijver]

On Fri, Dec 06, 2002 at 03:53:42PM -0500, Neal H. Walfield wrote:
> 64-bit systems do not necessarily give you 64-bits of virtual address
> space (even discounting the kernel's area).  Alpha, for instance, only
> gives you 43 bits.  There are real practical reasons for doing this:
> the page tables become far too deep and costly for no benefit (8k
> pages => 13 bits + 10k entries per page table * 3 levels of page
> tables).


If you use 8Kbyte pages. 64Kbyte pages gives you already 55 bits of virtual
address space. 

:)

Cheers,

p2.