On Fri, 1 Apr 2011, Curtis Olson wrote: > On Fri, Apr 1, 2011 at 8:12 AM, Gene Buckle <ge...@deltasoft.com> wrote: > >> What could you possibly be sending via telnet that would require >> "performance"? Seriously, the _only_ time you should be sending data TO >> the simulator is if a control state changed. I seriously doubt it's >> physically possible for you to fiddle with enough switches & knobs >> simultaneously to overload the ability of the telnet interface to process >> the events. If you're trying to use the telnet interface for >> pitch/roll/yaw/throttle inputs, then yeah, that would be a Bad Idea(tm) - >> FG has good built-in joystick handling and you shouldn't try to handle >> that externally unless there is some kind of compelling reason to do so. > > > In the default configuration, the telnet module services incoming > connections at 5hz. So in most cases the issue is probably more of latency > than bandwidth. But if you spin a knob, you could hit bandwidth issues too. > Latency is probably the biggest problem. Even if everything is running at > 30 hz, requiring 1 frame to process the input, and then a 2nd frame to send > the data back out to a physical display (like a physical radio stack with > real 7-segment displays) will end up feeling a bit laggy and not quite as > crisp as you'd like.
Ahh, ok. The way I'd set it up was running the udp data pump at 30Hz and I never noticed any kind of latency. Then again, I was explicitly setting values when I was sending data as opposed to the "send freq-up, let fg figure it out" method. Because this isn't a real-time system, you really don't want to put any more load on the simulator computer than you really have to. :) I've seen a 40 year old Honeywell DDP-124 run a 737-200's worth of steam gauges in real time, so there's no excuse for latency with our fancy multi-GHz systems these days. :) g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.simpits.org/geneb - The Me-109F/X Project ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_! Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. ------------------------------------------------------------------------------ Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
