[fpc-devel] performance tests: reference counted vs non-reference counted

[Graeme Geldenhuys]

On 16/11/2007, Michael Schnell <mschnell at lumino.de> wrote:
>
> Reference counting needs some additional code that is executed without
> writing additional instructions in the main line code. So it's no wonder
> it costs some performance.


Yes that I understand and I'm not arguing the point.  Well, that's
actually what I expected.  The thing is the performance is opposite
when you compare FPC and Delphi using TInterfacedObject.
Then looking at our MyBaseObject, the performance degraded a lot!!


> *  Why is our non-reference counted implementation faster than TObject
>     under FPC?  We even changed the order of tests to see if that makes
>    a difference, but it didn't. See test result 3.


And again quoting my original mail.  Why is our "non-reference
counted" object which in theory should be the same as TObject, faster
than TObject??  This result appears under FPC only.




Regards,
  - Graeme -


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