Results of latency test, list of computers tested for use with LinuxCNC

Vimeo issue, age related most probably.
Just click on next video, although might get that again.

This is the result of the nuc i3 ... much worse than the i7 yet the 7i80 works with it, with the i7 it loses immediately after 10 seconds. I think the 7i80 is faulty I got bored and I replace it with a 5i23 pci that I have to do nothing.

tommylight wrote:

Vimeo issue, age related most probably.
Just click on next video, although might get that again.
 

Tommy,
Does that mean, you get that error too?
No such message here though, and the video plays without probs.
I'll get your hint on board too, just in case. So Thx
Greez
Chris

billykid wrote:

This is the result of the nuc i3 ... much worse than the i7 yet the 7i80 works with it, with the i7 it loses immediately after 10 seconds. I think the 7i80 is faulty I got bored and I replace it with a 5i23 pci that I have to do nothing.
 

Yep, much worse latency:

7205 s  servo min:-137.800 us max: 134.800 us sdev:   9.800 us

Thanks! I realize, you got only one ram slot occupied. I have observed, that sometimes a second bar did good. So maybe .... Also look at "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"". Could be, that newer nucs are tuned more towards energysaving, which could move them into the direction of laptops latency wise. Just guessing though.
Greez
chris

the nuc is already abandoned like the 7i80 ... I have already inserted a 5i23 in the pci slot of the i7. the 7i80 gave me too many problems sometimes it was fine and sometimes it was not detected. I already have another 5i23 on a small cutter and the servo thread is 8khz closed loop.

Thanks for the input and suggestions, Chris!

Yeah, I don't know how but this old laptop just works. In addition to not disabling the speaker and sound modules, I've even been leaving the wifi on which I know increases latency substantially. It just doesn't seem to matter...

I'm just a hobbiest so I'm not making critical parts but I haven't noticed any inaccuracies.

When open, the back of the laptop protects the keyboard from direct hit chip projectiles but it still can get covered. I just vacuum them off and carry on...