On Thursday 30 August 2007 06:30, Durk Talsma wrote: > On Wednesday 29 August 2007 17:53, leee wrote: > > I'm not so sure I'd regard this as a new problem. I first reported it on > > the 8th Dec 2006 and Melchior responded that he'd been experiencing it > > for some time before then. At that time, Melchior thought it was related > > to the AI sub-system. > > > > The thread subject was "Periodic 'stutter' in FG" > > Speaking of which; there is one part of the AI system that causes some > (currently unavoidable) stutter. Models are loaded on demand, and this > causes some stutter. Mathias has indicated trying to move the loading > process out of the main render thread, or something like that. I'm not sure > how much that relates to the issues Tim mentioned in this thread. In > addition, there are a few other candidates for causing stutter in the AI > system, in particular the route finding algorithm and the traffic > separation detection code, because these are requiring peaks in CPU > activity. In particular when two aircraft request these functions in > succession, there can be peaks of activity. > > However, having said that, these AI related issues are quite unlikely to > cause the observed stutter, for two reasons 1). Heiko's original report in > this thread explicitly mentions that he has turned off traffic manager and > AI, and 2) I'm also seeing these stutters occur even before the AI traffic > system starts loading. > > Cheers, > Durk
I wasn't so sure that the stutter I observed was related to the AI subsystem either - once the stutter started, usually within one minute, the period seemed to be very regular, however, it varied between different sessions or after a menu reset within a single session. It could be anything between 1 and 8 seconds between pauses (frame rates between 25-50 fps). I couldn't establish anything consistant about it but re-writing some of the nasal I was using, to use less listeners, which were being called every frame, ameliorated the situation somewhat, iirc, but wasn't an answer. LeeE ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
