Messages in this thread |  | | Date | Thu, 12 Oct 2000 08:13:27 +0200 (CEST) | From | Boszormenyi Zoltan <> | Subject | Re: 36 bit MTRRs, Re: test10-pre1 problems on 4-way SuperServer8050 |
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On Wed, 11 Oct 2000, Tigran Aivazian wrote: > Hi Zoltan, > > I have tried your patch and although it works: > > # cat /proc/mtrr > reg00: base=0x00000000 ( 0MB), size=4096MB: write-back, count=1 > reg01: base=0x00100000000 ( 4096MB), size= 2048MB: write-back, > count=1 > reg02: base=0xfc000000 (4032MB), size= 64MB: uncachable, count=1 > > unfortunately, it doesn't solve the problem. The machine is still > unbearably slow (up to 40x slower!) and one of the eepro100 interfaces is > still not working.
I'm sure that your machine's memory map is NOT 4 GB from 0...0xFFFFFFFF and 2 GB from 0x100000000...0x17FFFFFFF. More likely the reverse: where are the PCI cards' areas? Look at the e820 map in the boot log, mark those areas as write-back and tell me what happens.
Regards, Zoltan Boszormenyi
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