On 11 Sep 2010, at 08:55, Martin Schreiber wrote:
> Interesting is that Delphi 7 compiles about 10 times faster than FPC on the
> same machine.
> http://www.mail-archive.com/fpc-devel%40lists.freepascal.org/msg08029.html
> Results with more code and FPC 2.4:
> http://thread.gmane.org/gmane.comp.ide.mseide.user/18797
> One would think Delphi and FPC need the same disk IO?
First of all, they don't, unless Delphi's source/DCU searching and DCU loading
logic is identical to FPC's.
Secondly, even *if* FPC (due to its design) is currently mainly limited in
speed by I/O and *if* parellising would not help much because of that reason,
then it can still also be slower than Delphi in other ways. Since Delphi 7 does
not use parallel compilation (afaik), that's in fact a given.
So yes, FPC is slower than Delphi. Would parallelising FPC reduce the speed
gap? Maybe (more likely for hot compiles), maybe not (more likely for cold
compiles).
Jonas
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