Thank for your answer.
Beside nbench, I'm also using Dhrystone to measure the guest cpu performance.
The performance does not much diffetence too.
Is the emulated guest performance not depend on guest processor clock?
Please don't top-post.
Qemu doesn't emulate cycle-accurately. Instead, it converts guest code to host code and executes it as fast as it can. So whatever you tell the guest on the cpu speed doesn't really matter. Except for the timebase of course :).
Mind if I ask what exactly you're trying to do with ppc emulation? I'm interested in use cases people have.
Alex
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