Greetings Charles wrote: > It looks good, but for some reason the CPU usage on my BeagleBone is around 50%!
> I don't know if this is specifically BeagleBone related, or perhaps due to the fact that I just pulled the configs/sim/gscreen and > share/gscreen/ directories from Master (skipping anything else updated outside these two directory trees). >Regardless, it seems responsive enough when I use keyboard jog, so I'll try and get it working with a real >configuration and try moving motors. I am working with a custom GUI in GTK2 including Gremlin on my BBB. The following are anecdotal observations. I would love to properly profile the running code bit do not yet see how to use the available tools (e.g. cProfile) (a) Gremlin needs lots of CPU - I don't know whether it is screen rendering without the hardware accelerators that is the culprit. (b) Showing the nicely shaded cylindrical tool is costly. If I cheat, and make it appear a negligible length/diameter one, then CPU drops by about 10% (c) I have GCode display in sourceview widget. If code (e.g. engraving) is very long then moving the active line in this seems very expensive. (d) Data which is "display only", e,g, Distance To Go DROs, implemented as labels are much cheaper than general ones that can accept input like the machine-axis DROs. (e) The GUI is surprisingly useable at very low rates of updating the toolpath, G code and even axis DROs. 1 second is OK. This makes significant average CPU savings. The this low rate is tested when running a real machine. The audio/visual feedback from the hardware makes the system feel snappy even though the screen is lagging. Tests with no machine are misleading. A BBB ought to be plenty powerful enough. Perhaps the proper GPU graphics will fix things. It would be nice to design an experiment to dummy out the graphics work that could be done by hardware or to verify in some other way that there are not other bottlenecks. Best wishes John Prentice ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
