[fpc-devel] Re: Comparison FPC 2.6.2 - Kylix 3

Martin Schreiber mse00000 at gmail.com
Mon Mar 4 13:22:11 CET 2013


On Monday 04 March 2013 12:05:37 Florian Klämpfl wrote:
> Am 04.03.2013 01:00, schrieb Graeme Geldenhuys:
> > 4.4 seconds (Kylix under Linux) vs 89 seconds (FPC under Linux)... That
> > is just too a huge performance difference to justify. Yes, we all know
> > the argument about more platforms, maintainable code etc, but that
> > couldn't possible be the only reason for such a huge speed difference.
> > Somewhere there is a serious bottleneck(s), or the FPC team simply
> > disregard optimization completely. From why I have heard them say, the
> > latter is more likely [unfortunately].
>
> You completely miss the point. If there are only approx 25
> features/properties which make the compiler each 10% slower than in
> total FPC is 10 (1.1^25=10.9) times slower than before.

Is this correct? It implies that every feature/property uses 100% of the total 
process. And if it is true it is absolutely necessary to stop adding features 
soon because 1.1^50 = 117.4. ;-)

Martin



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