On Sat, Nov 03, 2007 at 01:31:49PM +0100, Bo Brant?n wrote:
>
> Hello,
>
> I tryed different linux distributions on a computer with an Intel Core 2
> Quad and I noticed that the 64-bit versions was at least 10 times slower
> than the 32-bit versions, to boot the system took over 20 minutes in 64-bit
> mode and then even scrolling text at the command prompt felt slow, however
> Vista 64 boots as fast as Vista 32 on the same computer. So I would like to
> ask if this is a known problem or if there is some simple misstake I can
> have done.
>
> I used live cd's from gentoo and ubunto and at least ubuntu has a rather
> new kernel, also dmesg doesn't show anything strange, for example is the
> bogomips figure the same as when booting in 32-bit mode.
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.
--
Mathematics is the supreme nostalgia of our time.
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