Re: [hatari-devel] Re: Profiler CPU cycles values

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On tiistai 12 helmikuu 2013, Douglas Little wrote:
> All collected values are are unsigned and the collection is stopped
> 
> > at maximum unsigned value to prevent unnoticed value wrapping.
> 
> Yes understood - the main problem is the existence of these values at all
> - the test does not run long enough to cause capping everywhere (and
> they are spread almost equally across often-used and rarely-used code,
> mixed with many zeroes also). Bogus values must be arriving from the CPU
> core somehow to cause this. My results do not look at all like results
> posted previously on this forum (which to me looked quite sensible!).

If they don't contain cache miss information, they're likely to be
from the old UAE CPU core.  Maybe it for some reason has an average
more correct CPU cycle values (that could explain why some DSP
demos still work better with it than the WinUAE one).

Anyway, it needs to be checked out at some point. :-)


	- Eero