Messages in this thread | | | Date | Thu, 21 May 1998 17:33:10 -0100 | From | André Derrick Balsa <> | Subject | Re: Cyrix 6x86MX and Centaur C6 CPUs in 2.1.102 |
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Hi,
Vojtech Pavlik wrote: > > On Thu, May 21, 1998 at 03:44:27PM +0200, Martin Mares wrote: > > > > BTW TSC calibration in the setup code would allow showing MHz rating in > > > /proc/cpuinfo, so people would stop wondering why they get bogomips such > > > and such everytime a new x86 processor comes out. > > > > This would be interesting, but remember that CPU clock speed need not > > to be equal TSC frequency. > > Yes, but for all the chips produced up to now it is equal, and for later > chips we may decide based on the chip revision / manufacturer and if needed > apply a TSC per sec / CPU clocks per sec ratio for the respective chip to > get the correct CPU frequency. > > Vojtech
Well, in fact the TSC *is* supposed to *exactly* count CPU clock cycles, so I don't see what Martin means by "CPU clock speed need not be equal to TSC frequency".
Please enlighten me :)
Cheers, ------------------------ André Balsa andrebalsa@altern.org
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