Latency, error finishing read, and IRQ affinity

i changed the permissons on the file. i am refering to, in the file it states; "by default this program does nothing. change the exicution bits to run this file' or something along those lines. ill post an error report next time i am in front of it.

I should note that the rt_setup.sh depends on the host Ethernet port being setup in the interfaces file
and that the IP addresses in rt_setup.sh must match the host IP address setup there.

as far as permissions go, all that's needed is

chmod +x   rt_setup.sh
and then
sudo ./rt_setup.sh

i didn't get that pc working but i have a duo core laptop that i have it up and running on. i had it working on 2.8 at one point but my hardware configuration doesn't seem to like 2.9. i had issues with 2.9 when i first started researching linuxcnc so i switched back to 2.8 but i can't seem to get it working the way i had it. im going to remove and all the extra hardware from that pc and see if i can't install them one by one and pin point the issue. i get a journalctl error when i go through all the steps on the first page and when i run sudo ./rt_setup.sh, i get command not found. even thou i went through and setup the ethernet correctly and am able to ping the mesa 7i96s and get output from mesaflash. i created the file, made it exicutable and i still get the errors. the only pc i was able to get it work on was the duo core just to see if it was me or the machine. the service didn't run because it said i only had two cores but i didn't get the same error i get on two other four core machines. at this point, as long as it runs on the laptop i can work on the other machines at a later time and try to figure out my issues. thank you guys for all your help. it wont be the last time i need you, im sure. right now, i need some example hal and ini files to work with my drivers and servo as spindle. but ill start a new thread if my searching turns up empty

Is there any clear benefit or drawback to isolating extra cpus and then pinning the mesa ethernet to something other than the last one?

Also is there a way to configure which CPU LinuxCNC (I assume motmod?) pins to?

AFAIK LinuxCNC always pins itself to the highest numbered CPU

hachi wrote:

Is there any clear benefit or drawback to isolating extra cpus and then pinning the mesa ethernet to something other than the last one?

Also is there a way to configure which CPU LinuxCNC (I assume motmod?) pins to?

Probably eye candy because isolating more cores gives better looking  (faster) latency-histograms.
But with a Mesa card, the key paramater is the network latency, not the CPU latency.