How do I change from a regular kernel to a PAE kernel ?

[Linuxguy123]

On Tue, 2009-09-29 at 20:23 -0700, Kam Leo wrote:
> On Tue, Sep 29, 2009 at 7:27 PM, Linuxguy123 <linuxguy123 at gmail.com> wrote:
> > My laptop has 4GB of RAM. It is currently using only 3 GB of RAM.  I
> > want to upgrade to 8 GB of RAM.
> >
> > I am currently using a 32 bit non PAE kernel.  How do I change to using
> > a PAE kernel ?
> 
> yum install kernel-PAE
> 
> Note: There may be additional packages which need to be installed,
> e.g. kernel-PAE-devel, kmod-nvidia-PAE, etc.
> 
> I'm surprised that Anaconda did not detect that your processor was an
> i686 and automatically install the PAE kernel.

> > What difference in speed will I notice in doing this ?
Evolution seems to be faster, but 'free -m' isn't showing that I am
running out of memory or anything.   I generally have ~1600 MB free now.
I gained 1 GB, so before it would have been ~400 MB free. 

Now I should increase the size of my swap file partition from 2GB to
4GB...