Re: [Emc-users] Raspberry Pi PREEMPT-RT

[Gene H. <ghe...@sh...>]

On Saturday 23 June 2018 05:39:12 andy pugh wrote:

> I am baffled by this discussion.
>
> LinuxCNC relies on a real-time kernel in one of three flavours. RTAI,
> Xenomai or PREEMPT-RT.
>
> LinuxCNC supplies either RTAI or PREMPT-RT as part of the Live-CD
> images for x86 and amd-64 platforms but does not supply such kernels
> for ARM.
> So anyone wanting to run LinuxCNC on ARM has to find a kernel first.
> I believe that Machinekit might supply pre-built RT kernels for ARM.
>
I just pulled the zip of that, was  going to put it directly on the pi as 
I moved and mounted a usb-3 interface to a 60 GB SSD on it yesterday. 
Plugged inyo a usb-2 port, it was recognized and mounted on 
a /media/slash mountpoint uneventfully.

 But FF says I don't have perms, so I put it here and will move it when 
the perms are sorted.

The current kernel its running, 4.4.4-rt9-v7+. has some warts vis-a-vis 
its local keyboard/mouse operations but is otherwise doing a fine job.

copied to the pi, unzipping took a couple minutes, and now mc is slowly 
writing the unzipped contents of the file on that drive back to that 
drive.

Did I mention that usb-2, pi version, is slow yet? 749 megs to write, its  
making 367 bytes a second. I may as well send this and go back to bed.  
More news next month maybe? ;(

> I posted the link as it seems that (as of March) there is now a set of
> pre-patched kernel sources for the Rasberry Pi which should very much
> simplify the process or Pi-users.



-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>