On Fri, Sep 08, 2000 at 03:49:14PM -0400, Brian Gregor wrote:

 > I've tried compiling & running a LARGEPAGES kernel on my PC.  Hardware:
 > K6-III 350 MHz, 128 meg RAM, compiling on a Seagate SCSI-2 disk on a
 > DPT Smartcache III PCI controller.
 > 
 > Here's what I have for results:
 > 	compile GENERIC:   user       system        real
 > ------------------------------------------------------------
 > 4MB patch                10m35.710s  0m38.686s    14m17.171s
 > normal                   10m26.632s  0m34.549s    14m15.473s
 >      
 > No difference!  Is the LARGEPAGES patch intel specific?  To generate
 > my kernel, I just copied DR-EVIL.4MB and changed it to load my kernel
 > config.  I also tried lmbench to see if there was any improvement, and
 > there was no apparent difference between the largepages & standard 
 > kernels.  Each compile of GENEREIC above was done after a reboot.

Does dmesg show the `PSE' feature available on your processor?  I could
also believe that results might be different on different systems, as it
depends heavily on the TLB arrangement of a system.

-- 
        -- Jason R. Thorpe <thorpej@zembu.com>