[ELDK] Bogomips difference between 2.6.25 and 2.6.30

Philippe Villet Philippe.Villet at jdsu.com
Fri Sep 4 16:08:43 CEST 2009


On our custom board (based on AMCC 440EPx) , we have 592 Bogomips with a
2.6.25 kernel and only 50 bogomips with a 2.6.30 (moving from a ppc to
powerpc architecture).

Is there any reason for such a difference?????


/proc/cpuinfo on 2.6.25
processor       : 0
cpu             : 440EPX
clock           : 396MHz
revision        : 24.212 (pvr 2162 18d4)
bogomips        : 591.87
vendor          : JDSU
machine         : PPC440EPx Fttx

/proc/cpuinfo on 2.3.30
processor       : 0
cpu             : 440EPX
clock           : 396.200004MHz
revision        : 24.212 (pvr 2162 18d4)
bogomips        : 49.92
timebase        : 25000000
platform        : PowerPC 44x Platform
model           : jdsu,mts4000
Memory          : 255 MB

Thanks.
Philippe.





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