On lundi 22 septembre 2008, Vivian Meazza wrote: > gerard > > > On lundi 22 septembre 2008, Vivian Meazza wrote: > > > Hi Fred, > > > > > > Fred wrote: > > > > Hi Vivian, > > > > > > > > Vivian Meazza wrote : > > > > > As you know, I am. I have profiled the cvs-head. Nasal/hash.c seems > > > > to > > > > > > > be a _very_ significant CPU hog, but I can't link it to the > > > > staggers. I > > > > > > > note however that when I profile an old FG/osg from last Apr, it is > > > > > > > > stagger > > > > > > > > > free, and hash.c doesn't figure in the profiling. > > > > > > > > > > I can also say that staggering is visible in Fred's latest Win32 > > > > > binary. > > > > > > > > > > Really above my pay grade here. Can anyone else help? Negative > > > > > information is also useful. > > > > > > > > Could you tell me how you profiled FG under Windows ? > > > > > > > > Thank you > > > > -Fred > > > > > > I use LTProf here: > > > > > > http://www.lw-tech.com/ > > > > > > Small charge, but it seems to give some useful/meaningful results > > > > > > Vivian > > > > Are we sure that we are talking about the same topic and the same problem > > , > > as far i understand, > > => on one side, the cause is coming from compilation under an MS windows > > OS, > > => on the other side, there is problem within FG itself like described > > by AJ > > and Curt. > > AJ and I _think_ we are talking about the same problem. We might not be, > although the description of the symptoms, which we have discussed many > times, seems to be the same. The underlying cause might not be the same. It > might be the code, the compiler, the OS. We don't know, which is why we > need some more evidence. It might be different causes for AJ and for me. > What we do know is that we had a much better solution a while back. > > Vivian > >
So, i can try to explain why i don't notice any significant stutter with my configuration 32 bits one. May be, the power of the CPU AMD 3200 Athlon and GPU 7800 GS Nvidia Agp (running with Fedora Core 8) are enough for it and could explain that i don't have the problem. I only have lost FPS versus the performance of FG 1.0 for instance FG OSG => 70 fps FG 1.0.0 (with cloud and shadow) 80 fps Cheers -- Gérard http://pagesperso-orange.fr/GRTux/ "J'ai décidé d'être heureux parce que c'est bon pour la santé. Voltaire " ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
