On Sat, 2020-06-13 at 23:40 -0400, Gene Heskett wrote: > On Saturday 13 June 2020 20:53:36 andy pugh wrote: > > > Is there an expectation that a uspace package would work on whatever > > realtime system it found itself on, or would we need separate builds > > for preempt-rt, xenomai and rtai-lxrt? > > What diff would it make if you are spinning an iso? Spin it for whatever > flavor runs best. > > Preempt-rt, particularly with helper cards, has had little or no problems > getting the job done to my satisfaction on the two copies of the intel > D525-MW board that I own, one even doing software stepping for several > years, until it unscrewed a switch protected ball nut and scattered > balls all over. And my bag of balls I had restuffed those nuts with a > decade back cannot now be found. So that D525MW and all the motor > drivers that go with it is running the 6040, rather nicely but it grew > some mesa help in getting moved from the old hf mill. With the mesa > help it can do rapids at 200 ipm. > > I built a zenomai system to replace a BDI but before I could formulate an > opinion, a wheezy based iso appeared and thats still running on 3 of my > 4 machines. So I don't know a lot about zenomai. > > My 4th machine is an armhf running buster with a preempt-rt kernel that > gets 16 u-secs latency but that dissolves to 200 u-secs while starting > firefox. But I don't run FF on that and cut metal. Nothing else seems to > bother it. Running with a 4.19.71-rt24-v7l+ #1 SMP PREEMPT RT I built, > getting long in the tooth now, but the rest of the install is uptodate > buster and the currently running LinuxCNC is the buildbots master. All > have been updated in the last 2 days.
FireFox is historically slow to fire up, I could not even start it up on armhf raspberrypi with Gnome. I tried Xfce but there is a login loop, ended up installing LXDE which is not too bad. > > I did try the experiment of running the current buildbot 2.8-preemtrt > > package on an RTAI system and it chose to use POSIX non-realtime. > > > > I am trying to write some explanatory notes for the 2.8 release, and > > so would like to know if what I observed is what would be expected. > > So, do what you think is the best for the "normal" user. Keep in mind > that everything today is 64 bit, a place few of us has jumped into on > our work machines. I expect some teething problems we'll have to work > out. > > But I have confidence that won't be as big a problem as our imagination > is telling us. :) > > Cheers, Gene Heskett _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
