On Thu, 13 Dec 2012 16:29:49 +0200, Adrian wrote in message <201212131629.50248.kanto...@gmail.com>:
> On Thursday, December 13, 2012 15:04:16 Renk Thorsten wrote: > > > > > Somewhat related to the above - *if* the radio propagation model > > could be shown to be more realistic - what framerate loss would > > this be worth as compared to a faster, less realistic model? And > > does this question matter at all if this is implemented optionally > > - should not the user decide this? > > > > Hi Thorsten, Torsten, all, > > Regarding the performance, you are correct, the user can decide on > what to spend the CPU cycles. > But for the sake of documenting this issue, I have performed a test: > > > The test is performed in standard condition: on ground, all terrain > finished loading, visibility set to 40 miles, LOD range bare 60000 > meters, 3 stations tuned, each at limit of loaded terrain, approx 100 > km medium distance to them. First image shows subsystem enabled, > second shows subsystem disabled. I have highlighted with red the > relevant areas in the images. As always, click for details. > > http://wiki.flightgear.org/File:Radio-perf7b.png Radio subsystem > enabled. http://wiki.flightgear.org/File:Radio-perf9b.png Radio > subsystem disabled. Notice DME indication has appeared. > > In both cases, the FPS observed was 39. In long flight tests, the FPS > difference is more like 3-5 from disabled to enabled. > > Now, regarding terrain influence, modes of propagation, and clutter > influence on diffraction at different frequencies, you can observe > the details on the upper left of the images. I won't get into details > anymore, because I have done that already in a couple of messages. > > If anyone wishes to add more information on the subject of > performance, I invite you to use the wiki page: > http://wiki.flightgear.org/Talk:Radio_propagation > > I'm open to any other technical questions regarding the radio > propagation algorithms used. ..maybe add a commandline suggestion so we can hope to "compare apples with apples and pears with pears" etc? Without a commandline suggestion, you pile up all sorts of irrelevant factors such as "which runway you took off from" etc, whereby you may load a different set of tiles, _etc_. -- ..med vennlig hilsen = with Kind Regards from Arnt Karlsen ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
