Re: [Flightgear-devel] On line Multi Pilot freezes

[Nick W. <ni...@li...>]

On Saturday 06 January 2007 08:54, Durk Talsma wrote:
> On Saturday 06 January 2007 01:27, Maik Justus wrote:
> > Hi Nick,
> >
> > I think the AI-Objects (multiplayer Aircrafts are such things) in the
> > ground-cache cause this behavior.
> > @Mathias: I know, that you are working on optimizing the ground-cache
> > for such things. Is it much effort, to disable the AI-Aircrafts in the
> > groundcache up to that?
> >
> > Best regards,
> > Maik
>
> I doubt wether that's really causing the problem. The AI part of the AI
> models code regularly spawns new AI models on top of each other at those
> airports for which we don't have a ground network yet. In current CVS
> (HEAD) there is an example of this at Frankfurt am Main airport (EDDF).
> Please have a look at EDDF with AIModels / traffic manager activated and
> see if you have similar problems.
>
> There's a possibility that some of the latest changes in the FlightGear
> code are causing this, but I can't check right now, as I'm recompiling the
> whole source tree to get the latest simgear changes in.
>
> Again, there's also a possibility that Multiplayer AIModel aircraft are
> treated differently than AI AIModel aircraft, but I'm not familiar enough
> with the multiplayer code to know that for sure.
>

OK, this happens in local game also.  I set a basic test and turned on AI 
traffic.  I flew near one of the bots in the air - below is output from 
log-level=debug... and the last line is where it 'freezes' for 30/40 secs at 
a time - then processes and that loops and then 'freezes' again until next 
interation.  I don't like the look of 'ground_radius = 6.37021e+06'

Nick



Running Main Loop
======= ==== ====
Updating time
  Current Unix calendar time = 1168114278  warp = 24780
  Current GMT = 1/6/2007 20:11:18
  Current Unix calendar time = 1168114278  warp = 24780
  Current GMT = 1/6/2007 20:11:18
  Current Julian Date = 2.45411e+06
  COURSE: GMT = 0/6/107 20:11:18
  March 21 noon (GMT) = 1174478400
  Time since 3/21/107 GMT = -73.6588
  days = -73  hours = 20.1883  lon = 0  lst = 3.32167
  COURSE: GMT = 0/6/107 20:11:18
  March 21 noon (GMT) = 1174478400
  Time since 3/21/107 GMT = -73.6588
  days = -73  hours = 20.1883  lon = 122.378  lst = 19.1631
  Current lon=0.00 Sidereal Time = 3.23748
  gst => 195.257
  Current LOCAL Sidereal Time = 19.079 (19.0982) (diff = -0.0841852)
Elapsed time interval is = 9876899, previous remainder is = 2200
--> Frame rate is = 1
Model iterations needed = 1185, new remainder = 4099
prepare_ground_cache(): ac radius = 243.761, # triangles = 10572, # wires = 0, 
# catapults = 0, ground_radius = 6.37021e+06