Durk Talsma > Sent: 25 September 2007 07:36 > To: FlightGear developers discussions > Subject: Re: [Flightgear-devel] FGFS 0.9.11 release candidate two > > > On Sunday 23 September 2007 13:50, I wrote: > > Some observations: > > - Some small pauzes seem to be caused by consecutive calls to the > > systems controller and environment. Execution times of > these systems > > is variable, between calls, but the execution time of "environment" > > seems to be just slightly longer than that of "controller": > > > > Subsystem Timing Alert : 18150 controller > > Subsystem Timing Alert : 20519 environment > > > > Subsystem Timing Alert : 47917 controller > > Subsystem Timing Alert : 49514 environment > > > > > > The longer and icreasingly growing pauzes seem to be caused > by replay, > > possibly in interaction with some of the other subsystems. > I haven't > > really found out what is going on here. > > > > Just a quick follow-up question: Has anybody tried running > FlightGear / plib > with the last SimGear checkout (with Fred's profiling code)? > > The observed timing problems are the major show stopper for > the next release > (IMHO), so I think we should try to get to the bottom of it. > I'm postponing > putting out a release candidate until we have some better > understanding as to > what's going on. I might have another look this weekend, but > don't have time > right now. >
Here's a short burst of the output of Fred's profiling code using Windows XP, with the source code complied using MSVC8; Subsystem Timing Alert : 19000 fx Subsystem Timing Alert : 15000 fx Subsystem Timing Alert : 14000 replay Subsystem Timing Alert : 11000 replay Subsystem Timing Alert : 15000 replay Subsystem Timing Alert : 14000 replay Subsystem Timing Alert : 12000 fx Subsystem Timing Alert : 18000 replay Subsystem Timing Alert : 17000 fx Subsystem Timing Alert : 32000 input Subsystem Timing Alert : 19000 fx Subsystem Timing Alert : 11000 fx Subsystem Timing Alert : 11000 fx Subsystem Timing Alert : 11000 fx Subsystem Timing Alert : 63000 ai_model Subsystem Timing Alert : 12000 fx Subsystem Timing Alert : 16000 fx Visually, the stutters do not seem to coincide timewise with the output from this code, so I'm not _totally_ convinced that we are getting anything very useful. Is there anything else I can do to help? V. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
