Win32 Performance

Brendan Murphy bmurf at comcast.net
Fri Mar 21 12:26:52 CST 2003


> Hi Brendan,
>
> Interesting results.
>
> I see only few explanations of this:
>
> 1) this is TRUE
>
> 2) V4RB WIN is compiled by CodeWarrior.
>    Users of Valentina for Director (made by Visual C++) say they do 
> not have
> such problems....So if this point is true, then sounds like codeWarrior
> generate code 8 times slower of Visual.
>    I hardly believe in this, because CodeWarrior, as I recall, claim 
> that it
> generate code better of Visual.
>
> 3) ??? Right now I do not have more ideas...
>     I will need future do some tests and profiling to see what is 
> wrong and
> where...


One place to start investigating is why calling flush leads
to such extraordinary execution times of over a thousand
seconds in my first test. It may lead you to the root cause
of the performance difference since the flush call seems to
magnify the problem.



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