Maxmimum RAM for FC3

JM jerome at
Tue Dec 20 05:32:55 UTC 2005

On Tuesday 20 December 2005 12:06 am, Dave Jones wrote:
> On Mon, Dec 19, 2005 at 10:47:01AM +0100, luca porcu wrote:
>  > 32 bit  = 2 ^ 32 MB of RAM 4096MB is the max of RAM for CPU at 32bit!
> Except with PAE (Physical Address Extensions), the CPU is effectively
> 36 bit.  Giving a theoretical address range of 64GB.  In practice
> however, once you go past 4GB, your low memory region (0->896MB)
> becomes filled very quickly with structures that _have_ to live
> in that range, and all sorts of problems can occur (typically page
> allocation failures, oom-kills).
> If you need > 4GB, I really recommend going to x86-64.
> 		Dave

i cant afford to move to a 64-bit box, simply because its too expensive.  im 
trying to pump-up the RAM for mysql-cluster running on fc3..


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