Messages in this thread | | | Date | Fri, 31 Jul 1998 10:56:30 +0000 | From | Andrew Derrick Balsa <> | Subject | Re: CyrixInstead ? |
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Hello Nicolai,
> Hmmm, I've gotten a Cyrix 6x86 (IBM actually) and compiled kernels as > Pentium/6x86 and never got my CPU identified correctly (unknown).
On 2.1.112 you can compile your kernel as a 386, 486, 586 or 686 and you will still get correct identification of your Cyrix 6x86. > > Now I compiled (2.1.112) as 486 and voila,
Hmmm, you were probably using an older kernel previously. Note that the recommended setting for the 6x86 is to compile as a Pentium, PPro or as a last resort, as a 386. Compiling as a 486 diminishes kernel performance because of the extra padding needed on 486-class CPUs. > > nicolai@nikita >>> > /etc/X11 : cat /proc/cpuinfo > processor : 0 > cpu family : 5 > model : 6x86 2x Core/Bus Clock > vendor_id : CyrixInstead > stepping : 2.7 > fdiv_bug : no > hlt_bug : no > sep_bug : no > f00f_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 1 > wp : yes > flags : fpu > bogomips : 133.53
Looks OK to me. :-) > > Is this the desired behaviour? If yes, somebody should update the info in > menuconfig and xconfig accordingly since it classes the 6x86 with the > Pentium/K5/5x86 , which appears to be wrong...
This is the desired behaviour and the 6x86 is a Pentium class processor. In fact at the same clock rate it provides roughly 10% better kernel performance than a Pentium. Your 133MHz 6x86 is roughly equivalent to a 150MHz Pentium, in terms of kernel performance.
Please compile your 2.1.112 kernel as a Pentium processor and you will notice the CPU is (correctly) identified as above. There is no need to compile as a 486 (and it is not desirable either); the menuconfig and xconfig information is correct.
Cheers, -- Andrew D. Balsa andrebalsa@altern.org
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