Bo Brantén wrote:
On Sat, 3 Nov 2007, Matt Mackall wrote:
This is typically due to a problem with the setup of your MTRRs. Try
booting with mem=nnnM where nnn is some number smaller than your
actual amount of memory.
Thank you for that advice, the system has 4GB and if I boot with
mem=3072M it will run as fast as normal while if I don't use the mem
option it will run 10 times slower, however if I use a figure like
mem=3500M the kernel will panic, is there any way to determine the
highest usable figure without try and error?
Yes, look at how your MTRRs are set up (cat /proc/mtrr).
-hpa
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