Daniël Mantione napisał(a):
Op Sat, 10 Dec 2005, schreef darekM:
Hi
I've tested some of benchmark on
http://shootout.alioth.debian.org/
I've see that reverse-complement benchmark
<http://shootout.alioth.debian.org/benchmark.php?test=revcomp&lang=all> for
FPC is very slow. I discover, that problem is with readln, that function
consume about 90% of time. Because I use it in my program, I implemented new
version of reading files. My propositions is add tTextStream to unit Classes
using is very similar
while not eof do
begin
readln(s);
end;
The Shootout benchmarks should preferably be implemented without unit
classes to achieve the best memory usage results.
For me more important is speed, in real program we always use other units
Your code is welcome
though to add to unit classes, allthough I currently can't because it uses
assembler code withotu Pascal alternative, i.e. it would make the classes
unit unavailable on the other processors FPC supports.
I know, in code are three funcion: findendLine, findEndLine2,
findEndLine3 - there are propositions, please help me to make propers
compilers conditions.
Maybe strlBuf (rename to scanbuf ?) should be moved to system unit?
Can you do the same to improve readln?
readln is more complicated, is compiler function, is so small buffer
(only 128 bytes) and reads char by char.
I havent any idea to do this.
Darek
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