Preemptive RT on Jessie or Stretch?

For embedded kit I prefer to build the image myself, as the live image comes with a lot of cruft. I prefer to start basic and add packages as needed versus stripping them away.

But I'll try upgrading and see what happens

There is some new urgency to this - Debian drop Wheezy from LTS this month. No-one can responsibly consider Wheezy for a new build.

I'm embarking on a project now that will likely end up with an ethernet connected Mesa card ( wish I could find 7i77E ), as the panel PC I have for it doesn't have any pci slots. I'm looking at Stretch as the contender. I'll let you know what i find.

I installed linuxcnc on top of a straight Debian 64bit Stretch distro and latency tests were horrendous, on the same panel PC that had promising latency results with Wheezy 32bit. The vanilla Debian preempt kernel compile contains a lot of enabled DEBUG options, something known to play with latency testing. I tried to compile a recent (4.16.9) kernel, but it exposed compiler errors and failed. I'm installing the test image now, keeping my fingers crossed about latency.

I found this card used, kino dh610 i5 T2500 4 GB memory.
installed debian stretch 64, latency just over 5000. servo thread 8 khz no error even using the internet while the cnc works.
regards
Mauro

I have a 2nd embedded IPC on the way, so I’ll try Stretch when I get it. Even with the graphics issues, I don’t dare update the other IPC, as it’s in stable production and working perfectly (minus the missing HD graphics and touchscreen driver).

If you are not stuck on a debian based distro, I have found Linuxcnc very easy to install on Salix-14.2 (slackware based so you know it's stable, not bleeding edge). It comes out very light weight and not a lot of excess stuff involved.

HOWTO starts here:
forum.linuxcnc.org/9-installing-linuxcnc...?limitstart=0#110708