[Users] RE: Trouble getting the 4G (a.k.a. hugemem) patch to work.

[Edward Hibbert]

Yes, I'm on 32 bit.  I'm trying to get a single process with a larger address space.  PAE gives you up to 3GB in a single process, but I'm after the extra memory space that the 4G/4G patch gives you.

Bailey, Darragh wrote:
> I'm guessing that you are using the 32bit version since 64bit version
> doesn't require a hugemem version to address about 4GB. 
> 
> You should try using the PAE version, see the following post
> http://www.mail-archive.com/rhelv5-list@redhat.com/msg04272.html 
> 
> It explains that if you use the standard 32bit hugemem version that
> much of the memory area reserved for the kernel is used up for
> addressing the memory above 4GB. Where as the PAE kernel is for
> systems that support PAE, which has 36bits for addressing memory and
> will avoid any weird memory mapping issues all the way up to 64GB.
> Still though if you need a system with more than 16GB, you're better
> off using 64bit.      
> 
>