68k emulation benchmarks

[Piru]

Here are the results from running the FFTDemo on the target systems. It should be noted that MorphOS and AmigaOS 4 use different just-in-time compiler. This clearly has some impact on the results.



PA6T's strong FPU capabilities are clearly visible when comparing the float results to the integer ones.

sources:
PowerBook G4 1.67GHz and Mac mini G4 1.5GHz results are by me.
AmigaOne X1000 PA6T 1.8GHz result
Sam 440-EP Flex 800MHz result

[Piru]

this is 68k compatibility test, how about include original systems, and 68k emu on on other systems like winuae/sys_spec. bernd (i didnt know you trust him suddenly) has provided enough comparisons. otherwise it really starts to look like sole os4/mos contest..,

Adding both classic and very fast UAE setup would likely result in unreadable graph. Maybe some sort of logarithmic chart could work.

However, I have no problem with someone creating the charts with this information.

[Piru]

unreadable graph?

Yep. I mean say 68020 at 14MHz would result in a huge bar shrinking the others so that it would be impossible to tell differences between them. Even 060@50 is slow enough to result is quite unreadable graph:

[Piru]

It would be more readable if you could have the values rotated 90 degrees so that they didn't span the widths of multiple bars. I don't mind having to look at them sideways

Slightly better.

PS: The 060 results seem a bit skewed to me. Isn't it true that the 060 is pretty good at floating point, particularly the sort of multiply accumulate type stuff FFT involves? I would have expected it to score better than it did. Or rather, not expected the integer version to be that much faster than the floating point one. I guess the code slots into both execution units pretty well?

Perhaps the compiled version runs into unimplemented 88x FPU instruction? Should try to build it with proper compiler for 68060...