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Re: Rawhide: kernel & Yumex

On Mon, 2009-02-16 at 11:53 -0700, Michal Jaegermann wrote:
> On Mon, Feb 16, 2009 at 10:22:46AM -0600, Jerry Amundson wrote:
> > 
> > However, mine has less than 4GB ram, so even is yum is making this
> > decision, mine would not be a good candidate anyway...
> Apart of "Physical Address Extension" PAE kernels have supposedly a
> better mechanism for handling page tables.  I really cannot tell if
> these differences are measurable but recently on lkml somebody
> suggested that if your processer is PAE capable then you should be
> running PAE kernel regardless of how much of memory you have on
> board; especially if you do not have an overhead from "above 4Gig".
> Add to that possible gains from i686 over i586.
> All of the above for me is "anecdotal".
>    Michal

PAE kernels also give you real NX (no execute) in all of its various
names, instead of the emulated one in the non-pae kernel.

Also, the PAE kernel is suitable to be ran as a Xen paravirt guest,
whereas the other kernels are not.

Jesse Keating
Fedora -- FreedomĀ² is a feature!
identi.ca: http://identi.ca/jkeating

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