AJ wrote > > On Monday 22 September 2008 12:16:13 gerard robin wrote: > > > Again on that topic, i was wrong about 64 bit , which has nothing to do > > with the stutter/jitter within FG. > > That's true (since we've seen the same stuttering on 32 bit machines as > well). > > However, even though in your case disabling fancy effects appears to cure > your > system it seems there is something in FG causing a distinct stutter, > happening around once per second, irrespective of framerate. > > On my own machine (Core2duo 1.86 GHz, 2Gb RAM, 7300GS graphics card) the > stutter is basically undetectable under most circumstances, but very > noticeable with the Brest photo scenery and slightly less so when using a > highly-detailed model over another highly-populated scenery area. > > It seems to me to have been a fairly recent thing, which seemed to show up > here around the same time as James' patches were committed (though I'm not > certain enough to blame them, and haven't had time to revert back and > build > again.) It also doesn't appear to be caused by nasal and occurs whether > or > not AI traffic or the traffic-manager, or multiplayer are enabled. > > Nobody else seeing the same thing? >
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. Vivian ------------------------------------------------------------------------- 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 Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
