> Thanks for your response.
> I'm so sorry for the test result has some error.
> we has test the profermance of Linux on our mpc860 board with kernel 2.2.13.
>
> result on 860 is
> linux pSOS
> VxWorks
> for(;;) for local variable: 0.52 times/usec 23.81 times/usec 4.79
>times/usec
> for(;;) for global variable: 0.48 times/usec 9.58 times/usec 3.99
>times/usec
> while() for local variable: 0.57 times/usec 11.90 times/usec 5.78
>times/usec
> while() for global variable: 0.445 times/usec 11.90 times/usec 3.97
>times/usec
>
> result on Compiled "powerpc-linux-gcc -O2 "
> linux pSOS
> VxWorks
> for(;;) for local variable: 1.52 times/usec 23.81 times/usec 4.79
>times/usec
> for(;;) for global variable: 0.79 times/usec 9.58 times/usec 3.99
>times/usec
> while() for local variable: 2.018 times/usec 11.90 times/usec 5.78
>times/usec
> while() for global variable: 0.908 times/usec 11.90 times/usec 3.97
>times/usec
yes, but what did you use to measure the times, what is the *actual*
code that you ran? have you switched your cache on?
Rob
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