20TB Storage System (fsck????)

Julian Elischer julian at elischer.org
Thu Sep 4 11:53:24 PDT 2003



On Wed, 3 Sep 2003, Tim Kientzle wrote:

> Max Clark wrote:
> > Ohh, that's an interesting snag. I was under the impression that 5.x w/ PAE
> > could address more than 4GB of Ram.
> 
> That's >4G of memory in the system.  32-bit processors
> are still limited to 4G processor address space, which means
> <3G per process (allowing some memory for kernel operations).
> You can't get around that unless you either go for a 64-bit
> processor or do some complex coding to break your application
> storage across multiple processes.


It's worse than that, becasue I think that to handle >4GB of ram you
need to limit your processes to about 2G of virtual space.





More information about the freebsd-performance mailing list