LinuxCNC just stops............Help me Mr. Wizard.

I seem to have a pretty serious problem. Linuxcnc just stops in the middle of a run. I have been fighting this for months and am at wits end. Here's some details.
Master version
Arock Q1900M mb, 4gig ram, 120gid SSD drive
As much turned off BIOS as possible including all power savings, extra ports, audio, ...etc, etc....
Mesa 6i24 controller, Mesa 7i40 motor drives, Mesa 7i37 opto isolator (yeah, Mesanet shop is 30 minutes away....)
Debian Stretch install, Mate desktop. Very clean and simple install, only what is really necessay to run.

First image is a screen shot of a test run I was just in. Program loops through my chainring. Note in the command terminal window the 'task: main loop took 0.xxxxxx seconds.' Linuxcnc stops every time this occurs. Note in the Axis gui the machine on/off button is off. The stop is just as if one clicked on the machine on/off button.

Yeah I have checked the latency. so many times I'm dizzy. 2nd image is latency histogram for a 36 hour period. Note I already have isolcpus=2,3. This lowered the latency by almost a factor of 10.

3rd image is of the command window while I was trying to make parts. Each time the stop bites the 'main task loop took... message pops up. It's a real PITA trying to run. Fortunately I was able to recover and actually finish the work.
Note the lines directly after the 'Shutting down and cleaning up LinuxCNC...' line.

Sooo, any and all clues would be deeply appreciated. Anyone with in-depth knowledge of timing in side Linuxcnc?

Oh, in [TASK] section, cycle time = .015

The terminal mentions a following error. do you see that message in AXIS?

Chris M

Ah, Cmorley. One of the experts.

No, no messages what so ever in Axis.

I know there are a few ferrors showing. my x axis is a bit sticky.

This may not be relevant, but I had the same problem. It would just stop and turn the machine off and report those same errors. Another thing it did was adjust jog speed while jogging. All the motor wires and keyboard and mouse wires were going through the same hole in the table it's sitting on. Since replacing the keyboard and mouse with wireless units, the problem has gone away. Something to look at anyway.

persei8.
thanks for the info. my mouse and keyboard are usb. I have an old keyboard with the old style plug. I'll try it. and i'll look for a non-usb mouse also.
I'm desperate....

A following error will turn the machine off (as you described)
Other ideas are electrical interference (say on home switches) but i would expect to see that error message.
A memory test of the computer may show suspect memory.

Can we see your config files to see if the following error is from a slightly miss configured setting?

Chris M

OK, well I am going to eliminate all ferrors by opening the following error allowable to at least 1.00", then run my looping program.

I have noticed one weird thing. see the image. Note the extreme acceleration.... WTF.

where does that number come from?

Cmorley, here are my config files. a bit messier than usual, but I've been in and out of them so many times....