Adrian Veith wrote: > Hi, > > two days ago i posted a comment about my experiences porting our > database server to fpc. yesterday i tried to figure out where the speed > differences between delphi and fpc come from. At the moment i stuck a > little bit, because the results i get don't make any sense at the moment > to me. > Anyway i dropped over another problem, which might be part of the cause > of my problems. I tried to create a test base for my investigations and > created a function NumberToText which converts an integer to written > text (like NumberToText(1234) -> "one thousand two hundred thirty > four"). When I filled my database with these generated strings I found > some significant speed differences between delphi and fpc (over factor > 10), which made me curious. According to your comments about my first > posting, i suspected the Memory Manager and created three different > versions of this NumberToText function and three test loops which each > calls the according NumberToText function for 0..999999. Here are the > results for fpc and delphi (w and w/o FastMM4) > > Test1 uses "optimized" string concatention which avoids heap fragmentation
Did you try/have an unoptimized version? FPC doesn't need these optimizations, I fear they hurt only. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
