On Mon, Aug 12, 2013, at 12:15 PM, Charles Steinkuehler wrote: > On 8/12/2013 10:58 AM, Gene Heskett wrote: > > That said, even with the latest 2.5.3, I see a realtime error advisory, but > > it may not show up until the next day of uptime for LCNC itself. And I > > have never detected that the machine itself, if in motion at the time, was > > ever affected. > > I've had these on both x86 and on the ARM, and in both instances they > appear to be harmless. It seems that LinuxCNC considers any latency > over 25.000 uS to be a real-time error, but I expect latencies worse > than that using Preempt-RT (x85) and Xenomai on the ARM. LinuxCNC can > operate just fine with these errors (worst case is 50-75 uS or so, which > is fine for running a 1mS servo thread). > > So far it hasn't been enough of a nuisance for me to crawl through the > code and figure out how to change the warning to a different threshold. > > Anyone know how to do this? I *WOULD* like to see errors reported if > latency was over about 80 uS or so, but don't know what configuration > setting (or chunk of code?) to change. >
I have vague recollections of the trip point being set relative to the average of the last few measurements or something like that. But it may have been changed since the last time I looked at that code. (It has been years probably.) The message is (or at least was) verbose enough that it made a fine search string for grep. If translation infrastructure has been added the detection code and the message might no longer be in the same place, but it is worth a try. -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
