Installing LinuxCNC 2.9 or Master on Linux Mint 21

Been running for over an hour with no issues so far, using Rod's premade kernel, while watching youtube and recording with OBS Studio at 2560X1440 resolution.
Heads up, this is a laptop, so the processor has to be set in the "performance" mode by the CPU governor, otherwise there are latency errors, but the link remains OK.

tommylight wrote:

Todd Zuercher wrote:

It is a Debian issue if they choose or compile a buggy kernel version for release.
On the post before this, i was trying to explain that it is not an issue for Debian at all, it is for us.
As far as Debian is concerned it works, otherwise it would not be included on their servers.
And as Rod noted, they do not care much that we have issues with it as we are very few that use the RT kernel compared to Debian's user base.

I really think anybody who has issues with this should be logging to this Debian bug
bugs.debian.org/cgi-bin/bugreport.cgi?bug=1022170
I have asked for support before but no user has joined in so its me standing alone.
Get on the bus guys. If there were 10-20 reports they might listen...

Todd Zuercher wrote:

Just curios, does anyone know what the difference is between Rod's kernel and the broken Debian one? or in other words what the real problem is with the Debian one so we can suggest a proper fix for them?

Finally found the answer to this but it needs somebody with more experience than I do.

The Debian RT patches are here
salsa.debian.org/kernel-team/linux/-/tre...er/debian/patches-rt
The series file outlines the order of and whats going on
salsa.debian.org/kernel-team/linux/-/tre...er/debian/patches-rt
Support for lazy preemption seems a possible culprit.

This is a useful page
www.reddit.com/r/debian/comments/ai618b/...bian_kernel_patches/

Spammer booted.

Installed Mint 21.1 Running with no problems.
 

Hello ! Racing to get better latency results on j3355 - could other test latency histogram before and after stopping apparmor service ?

sudo systemctl stop apparmor
sudo systemctl disable apparmor ?

www.phoronix.com/news/AppArmor-Linux-5.5-72-Tests

One more:

exa.net.uk/latency-debugging/