I find that Linux provides the most CONSISTENT performance, since 
FlightGear supports multiple threads under Linux (./configure 
--with-threads).  I use this so the page build rate does not get degraded 
by the loading of scenery.  I do build under both Windows (9x) and Linux 
and see very similar FPS values.  I would go with the compiler environment 
you prefer.  If you prefer an IDE, you may want to use MSVC under Windows.
   I don't know if you can build FlightGear under something like KDevelop.

Jonathan Polley
On Wednesday, April 17, 2002, at 09:15 AM, Curtis L. Olson wrote:

> Marcel Wittebrood writes:
>> Dear developers,
>>
>> I am in process to become a developer. I wandered though the archives
>> but could not find an answer to my question :
>>
>> Which operating system (Lunix or Windows) gives the best flightgear
>> performance on the same computer ?
>>
>> Stated in other words. Is there any noticeable difference in the number
>> of frames/ sec. when running on either Windows or Linux ?
>
> There isn't a direct answer to your question.  It depends mostly on
> the particular video card you have and the quality of it's windows
> vs. linux driver software.
>
> For nvidia cards, nvidia makes both the linux and windows drivers and
> as I understand it, they share a common core code set, so performance
> between windows/linux with nvidia hardware is nearly identical.  For
> other cards your results may vary.
>
> But in terms of windows vs. linux there really isn't much difference
> once the applications is up and running.
>
> You might find differences in compiling with gcc on linux vs. cygwin
> on windows.  (But gcc on linux vs. msvc on windows might be a fairer
> test to do.)  You might find differences if you measure just the
> amount of time to load data off the hard drive, although your quality
> of disk subsystem hardware (i.e. scsi vs. ide) plays a big part there
> as well.  You might find differences if you run other intensive
> programs on the same machine at the same time (but you don't want to
> do that usually on either platform.)  You might find differences if
> you are low on memory and have to page swap.
>
> But, for smooth frame rates on any platform you want a fast processor,
> a fast video card, good drivers for that video card, enough memory so
> you don't have to page swap, and you don't want other processes
> running and competing for the cpu.
>
> So, the answer is "yes" you may find some differences if you look
> closely, but "no" probably none that have any real signficance (beyond
> the quality of your video card drivers.)
>
> Choose your favorite OS, hardware, compiler, and video card and
> hopefully flightgear will run just fine on it.  If not, hopefully you
> can help us fix the problems and/or port the code to your platform.
>
> Best regards,
>
> Curt.
> --
> Curtis Olson   IVLab / HumanFIRST Program       FlightGear Project
> Twin Cities    [EMAIL PROTECTED]                  [EMAIL PROTECTED]
> Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org
>
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