Hardware latency tests, used PC's

Thanks for all of your testing Tommy,

I have been looking for a higher end board that gives good results with RTAI. Price is not a consideration within reason I just want to be able to build a kernel that doesn't take 24 hours to compile. I would really like to find something on a mini ITX form factor otherwise I have to make some changes in my cabinet. I have a 6i25+7i76.

24hrs to compile a kernel ?

Are you using pen & paper, I thought 2 hours was slow.

LOL. It may not have been a full 24 but after waiting all evening I went to bed and left if finish overnight. This is a an a J1800. It is running Mint 19.3 with LinuxCNC 2.8Pre and so far no problems. So for just running the machine it is fine. Someday I would like to get a touch screen and try probe basic too.

Thanks
John

I'm using a J3355 and reckon Mint with MATE is too much of a resource hog, when there's Debian with XFCE available.
I'm really astonished by the number of people that want to use Mint & MATE, especially when Debian has a couple of lighter weight Desktop environment options.

MSI B470, AMD Ryzen 3950, 32GB RAM, Nvidia RTX2080, 1TB NVME, Preempt-RT:

Asked my brother to do some quick tests yesterday, for some reason no matter what he did to it, the latency never got over 60000 for the base thread and under 40000 for the servo thread !!! This was without any setting changed in bios.
Have to find a way to do more testing as this just seems wrong compared to the above setup with Ryzen 5 3600.

JohnnyCNC wrote: Thanks for all of your testing Tommy,

I have been looking for a higher end board that gives good results with RTAI. Price is not a consideration within reason I just want to be able to build a kernel that doesn't take 24 hours to compile. I would really like to find something on a mini ITX form factor otherwise I have to make some changes in my cabinet. I have a 6i25+7i76.

First, why are you compiling kernels, there are already two of the 4.nn.n variety ready made and they both work nicely.
The H61M boards from Asus and Asrock mentioned above are 17X22.5Cm in dimensions, so very close to ITX, Asrock has a parallel port header, Asus does not, Asrock works with 2'nd and 3'd generation I3 and i5 processors, tested with an i5 2500 quad core works nicely. Most probably Asus would work too.