latency and latest linuxcnc

tommylight wrote:

If i do not go out of town tomorrow, i will set up a test PC and run all this
linuxcnc.org/docs/2.8/html/getting-start...etting-linuxcnc.html
Step by step.
Is that ok, or is there anything else?

Using the link above then using this from it www.linuxcnc.org/iso/linuxcnc-2.8.0-buster.iso I get a 404 error

Clive wrote:

tommylight wrote:

If i do not go out of town tomorrow, i will set up a test PC and run all this
linuxcnc.org/docs/2.8/html/getting-start...etting-linuxcnc.html
Step by step.
Is that ok, or is there anything else?

Using the link above then using this from it www.linuxcnc.org/iso/linuxcnc-2.8.0-buster.iso I get a 404 error

Philc54 wrote somewhere that’s because they are making the final adjustments to release the final 2.8.

A little change to above discussion -
I just installed Iso for 2.8 Rpi4 - no problem.
Ran latency - its at the 1.2 second limit
Check the cmdtxt file and isolcpus from the instal. It l is set to =3.
1. Is there a benefit here to changing it to = 1,2,3 as discussed many times for earlier version of linuxcnc running on amd64 machines?
2. Any downside to such a change - ie things I don't know about running on the other cores of the Rpi?
3. Super noob question here - with this iso install - no need to seperately install an RT-prempt?
Thanks for clarifications.....
Dennis

The pairs of cpus you isolate should be on the same die....at least this is the information I've seen for Intel, the reason being is that a pair of cpus share cache. Something along those lines, it made sense when I read it and damned if I can find the article.
Not 100% sure about ARM. Hopefully Nvidia wont mess with the ARM platform.