On 17-Jan-99, Phillip Deackes took time to write : >> so my AMD K6-2 at 350Mhz should have 700Bogomips isn't it ? > > I think I would be concerned too. I have an AMD K6-2 3D 350 MHz
I am ! > processor, overclocked to 400MHz and I get the following from cat > /proc/cpuinfo: > > processor : 0 > cpu : 586 > model : AMD-K6(tm) 3D processor > vendor_id : AuthenticAMD > stepping : A > fdiv_bug : no > hlt_bug : no > f00f_bug : no > fpu : yes > fpu_exception : yes > cpuid : yes > wp : yes > flags : fpu vme de pse tsc msr mce cx8 syscr mmx 3dnow > bogomips : 801.18 i have : processor : 0 cpu : 586 model : AMD-K6(tm) 3D processor vendor_id : AuthenticAMD stepping : M <---- difference !!! what is it ? fdiv_bug : no hlt_bug : no f00f_bug : no fpu : yes fpu_exception : yes cpuid : yes wp : yes flags : fpu vme de pse tsc msr mce cx8 syscr pge mmx 3dnow ^^^ difference ! what's that ? bogomips : 350.62 i will try to read the kernel sources if i understand anything... but i someone knows about these things... > Sorry if I state the obvious, but you are running at 3.5 x 100 MHz? You ^^^^^^^^^^^^^ i have to check tomorrow directly on the main board (is that what you think : multiplier and bus frequency) > do have 100 MHz memory? i have two 64Mo chips 100MHz coming from different manufacturers (could that be the cause ?) will bogomips change if memory changes ? > I have found in the past on a couple of occasions I have had ludicrously > low bogomips figures and have re-compiled the kernel (not even changing > the settings!) and the rate has gone up the next time i have re-booted. > Only ever happened with a RedHat system - don't know why. isn't that strange ? bogomips should only depend on hardware no ? > What kernel are you using? There are a couple of AMD K6-2 patches > around. 2.0.36 without any patch i can think of. otherwise the 'compile as [386/486/Pentium/PentiumPro]' option in kernel compilation could change the bogomips rating or not ? i compiled it as a 686. should i compile it as a 586 ? Patrick