[fpc-devel] Re: Compiler bottlenecks

Sergei Gorelkin sergei_gorelkin at mail.ru
Thu Jul 15 15:36:39 CEST 2010

Michael Schnell wrote:

> I did not take a look at FPC's memory manager. Maybe someone might want 
> to do some profiling ....
I did the extensive profiling when working on fcl-xml package. For a single-threaded application, 
the following is true:

- FastMM is somewhat slower than FPC's memory manager, but the difference is small.
- Given the amount of source code in FPC and FastMM, FPC is clearly a winner :)
- A lot depends on how you deal with memory. It is much faster to allocate only than to allocate
   and release in turn.
- Given the above, a single forgotten 'const' modifier at function argument of type string may ruin
   your application performance irrespective of memory manager used.


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