pirmd., 2026. g. 19. janv., plkst. 12:59 — lietotājs Robert Schöftner (<[email protected]>) rakstīja: > > The best bet is probably to check out the source, switch to 2.9 branch, > install all build dependencies, and build the .deb yourself on ubuntu > 22.04. > > this should cover all steps > https://www.linuxcnc.org/docs/devel/html/code/building-linuxcnc.html > just follow "4.2 Building Debian Packages". >
Thank you Andy for tips, dpkg did install the package but something was wrong, LinuxCNC sample config started with error that "rtapi.conf not found". That seemed like problem due to error in install. So now I want to thank Robert for the link, I did build the deb package from source, got it installed, LinuxCNC sample config starts, Axis GUI shows up!!! So far so good. I was "slightly concerned" about the plot in latency histogram: https://ibb.co/21KyxrbV It is Dell Latitude 5550 laptop (to be used with Mesa 7i96), in BIOS I turned off everything I could find - all the CPU c-states, hyperthreading and I think there was something more. Played with isolcpus as I still do not actually believe that there are 12 cores (more like 6 cores and 12 threads) so just to be sure to cover 1 core, I isolated 10 and 11 just to be sure. So I got this: https://ibb.co/zTsZSk3r The thing is that old laptop had this: https://ibb.co/fVD2SJfp What I am worried are those few cycles with insane deviation, max is 453 usec with cycle time of 1000 usec. Colleagues already complained that with old laptop there are occasions when LinuxCNC stops with error about not being able to read 7i96 board (and that is bad bcause coil does stop but it is stays on thus baking the specimen in particular spot). I did find a forum thread but that was scarce on things to try: https://forum.linuxcnc.org/18-computer/56231-getting-setup-with-pc-and-mesa Is there any other place that contains some more things I can try to improve those extreme deviations? Or maybe the kernel is no good and I should put some Debian preemt-rt kernel there? (But then I need some instructions as I could not find any post. and synaptic provides approximately zero results for "linux-image-rt" search querry). Thanks in advance! Viesturs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
