Per Jessen wrote:
James Knott wrote:
http://en.wikipedia.org/wiki/Physical_Address_Extension [snip] However, it imposes a performance penalty and applications have to know how to use it, to gain any benefit.
I suspect you're right about the performance penalty, although I'd like to know more about it, but the applications need know nothing about PAE whatsoever. The application address space does not change.
While I don't have the exact details of PAE, in general memory mapping works by mapping physical memory outside of the normal addressing range, to an address within that range. This means that only a portion of that physical address range can be visible at a given time. An application has to be able to tell the operating system what portion of the physical memory it wants and also where in address space it wants it to be located. Here's some more info. http://www.microsoft.com/whdc/system/platform/server/PAE/pae_os.mspx -- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help@suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq@suse.com