RTAI 5.3.3 Beta release for LinuxCNC (Needs testing, esp on Intel)

The RTAI dev is working on kernel 5.4 RTAI packages for Debian Bullseye soon, and wants to test these changes on different hardware before it rolls out. Please test rebooting and shutdown.

ACPI power states have been removed, this should improve performance but may require holding power button down after the system is halted as software shutdown may not work properly.

Is this a problem for anyone and is software shutdown required?

Debian packages:

github.com/NTULINUX/RTAI/releases/tag/v5.3.3-beta

To test LinuxCNC against it, you have to build from source for now:

cd linuxcnc-git-tree/src
./autogen.sh
./configure --enable-non-distributable
make
sudo make setuid
cd ..
. ./scripts/rip-environment

Then:

latency-histogram

Or:

linuxcnc

Bari wrote:

ACPI power states have been removed, this should improve performance but may require holding power button down after the system is halted as software shutdown may not work properly.

Is this a problem for anyone and is software shutdown required?

When I first started using LinuxCNC the RTAI kernel did not support software shutdown. And it was annoying. Especially as my mill doesn't have a power-down button. (It has a switch which turns on a PSU which closes a relay, then that relay is kept closed by motherboard USB power, which is turned off by software shutdown. 

So, if we can have software power-down I would encourage it. 
 

OK, I will add power states back in. The very next step is RTAI kernel 5.4 Debian packages, just want to make sure these changes work for other people so I'm not changing too much at once.

Cheers!

A single post and two thank you's, that's a first!

The RTAI dev ^^^

Bari wrote:

The RTAI dev ^^^

I was sure he is!