Re: i686 SMP systems with more then 12 GB ram with 2.4.x kernel ?

[Alan Cox]

> up as a 5% performance loss on normal loads, and this would make it 
> worse.  We're probably better off implementing PSE.  Of course, making 
> these kinds of choices is hard without actual statistics of the 
> usage patterns we're targetting.

You don't neccessarily need PSE. Migrating to an option to support > 4K
_virtual_ page size is more flexible for x86, although it would need 
glibc getpagesize() fixing I think, and might mean a few apps wouldnt
run in that configuration.

Alan