Quick update...... After seeing JT's thread on the forum I installed Lubuntu Bionic-Beaver. Followed the instructions for building the kernel (used make deb-pkg), more or less used the Mint 19 recipe to build Linuxcnc (did this on my T530 Thinkpad). Installed said kernel & packages on the Atomic Pi.
Running latency-histogram --nobase saw some very promising figures. I had to add isolcpus=0,1,3 (no that's not a typo). I have another kernel to try with 1000Hz timer, instead of 250Hz and we'll see if that has any better results. I have been trawling the interwebs for some tweaks for RT kernel but many are old. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users