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i've been playing lately with ethernet in linuxcnc. came across an interesting reading from intel: eci.intel.com/docs/3.3/development/performance/tsnrefsw.html

i've got an i5 gen11 mobo with i226-V ethernet controllers on it and my home brewed zynq7010 board with PTP-capable gigabit PHYs. working on a bare metal in zynq i have pretty good control over latencies. so i am trying to find ways to tighten linuxcnc's network jitter as much as i can.

intel's product brief mentions that:
Commercial and server versions (LM/IT) support the TSN standards and features and have been designed and validated
accordingly, and maintained as part of its product lifecycle, including AVNU certification. Non-commercial version (V) does not
support TSN; although some low-level features may be partially exposed temporarily, its usage is strongly discouraged

anyways, i patched RTAPI  to use CLOCK_TAI, and tried SO_TXTIME thing with an ETF qdisc. without much luck, unfortunately - the TX unit promptly hangs.
TAPRIO qdisc looks much better. seems to be working ok on my i226-V: with trial and error in setting up gates and IRQ affinity tweaking i am now consistently getting around 100ns rx time jitter on zynq with a flood ping running in parallel..

haven't found a proper datasheet on i226, will probably try do buy a i226-LM chip from mouser and solder it in. also will check i210, but it does not support TAPRIO offload. but maybe ETF+SO_TXTIME is working
 

Hi all,

It’s been 18 days since I posted, and unfortunately, there’s still no proper solution.Is the LinuxCNC wiki no longer being maintained?
It’s quite disappointing that essential post processors—crucial for CAM integration—are still unavailable, and broken links remain without updates. Are there any admins or contributors who could look into this?

@Grotius – thank you for trying to help, but unfortunately, the link you shared doesn’t seem to work as expected.

I’ve been a long-time LinuxCNC user and have always appreciated the flexibility and performance it offers. Recently, I invested significantly into a CamWorks setup (SOLIDWORKS-integrated), expecting to pair it with LinuxCNC as my trusted controller. Sadly, I’ve hit a wall due to the lack of a working post processor, and it’s a frustrating place to be after committing both time and money.

If anyone has a working CamWorks post processor it would be a huge help not just to me, but to many others in the same situation. And ideally, it could be restored to the wiki for future reference.

Thanks in advance to anyone who can assist!

Hallo zusammen,

leider bekomme ich immer noch die Watchdog Fehlermeldung.
Vielleicht hat noch jemand eine Idee?
PC ThinkCentre M91P (SFF)
Die Mesa 7i96s ist direkt am Netzwerkport des Mainboards angeschlossen.
Neue Installation von Linux CNC 2.9.4 vom offiziellen Iso Image.
Der PC ist nicht im Internet 
Folgende Einstellungen habe ich vorgenommen (siehe Bilder im Anhang)
Grub Parameter (nach dem Beitrag von @PCW) 
Netzwerkeinstellungen 
Gmoccapy Maschine mit Minimaleinstellungen 

Die Latenz Werte aus der Messung sind an sich in Ordnung. 
Die Probleme kommen erst beim Start der Maschine (wenn das Netzwerk aktiv ist).


Leider hat der PC eine Art Whitelist im BIOS. Eine gekaufte Grafikkarte wurde nicht erkannt erst bei der Ursachensuche habe ich von der Whitelist erfahren. Dort ist definiert welche Produkte akzeptiert werden. 
Deshalb habe ich Zweifel ob eine separate Netzwerkkarte überhaupt erkannt wird.

Vielen Dank für eure Hilfe 
Erwin