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 Forum index » Advanced Topics » Cutting edge
Real Time Kernel 4.19.25-rt16 for 32 and 64 bit is Available
Moderators: Flash, Ian, JohnMurga
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rockedge


Joined: 11 Apr 2012
Posts: 1267
Location: Connecticut, United States

PostPosted: Wed 13 Mar 2019, 16:39    Post subject:  Real Time Kernel 4.19.25-rt16 for 32 and 64 bit is Available
Subject description: full RT kernel ready for download and experimenting
 

▶—— Linux RT Kernel 32 bit ——◀

Linux Kernel: 4.19.25-rt16 (i686)
Kernel Version: #1 SMP PREEMPT RT Wed Mar 13 12:03:11 EDT 2019
Build GCC: 7.3.0
PAE Enabled: Yes

https://rockedge.org/kernels

▶—— Linux RT Kernel 64 bit ——◀
Linux Kernel: 4.19.25-rt16 (x86_64)
Kernel Version: #1 SMP PREEMPT RT Wed Mar 13 18:57:00 EDT 2019
Build GCC: 7.3.0

Kernel Command Line:
psubdir=Bionic64-v8 pmedia=atahd pfix=fsck net.ifnames=0

https://rockedge.org/kernels
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Last edited by rockedge on Wed 13 Mar 2019, 22:06; edited 3 times in total
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Smithy


Joined: 12 Dec 2011
Posts: 1063

PostPosted: Wed 13 Mar 2019, 18:26    Post subject:  

Nice one Rockedge.
Details, advantages of this kernel etc?
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rockedge


Joined: 11 Apr 2012
Posts: 1267
Location: Connecticut, United States

PostPosted: Wed 13 Mar 2019, 20:58    Post subject:  

hello!

It has been reported that the real time kernels use less RAM. These kernels have really low latency and are good when using CAD/CAM or controlling running CNC machines or for puppys that record audio or use software synthesizers and sequencers for electronic music.

the kernel can for example can always give audacity the most cycles during it's operation with very low latency. MIDI controllers are another use as is video editing or recording.

there are packages and programs that can use this ablity.

as for servers,there are not really any advantages in performance to use a real time kernel. Although as stated before, they have shown they use less RAM.
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rockedge


Joined: 11 Apr 2012
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Location: Connecticut, United States

PostPosted: Wed 13 Mar 2019, 21:04    Post subject:  

They are out there to test out and experiment with. See what happens....
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Revolverve


Joined: 08 Nov 2008
Posts: 232
Location: 45°17'28.8"N 72°16'08.8"W_avatar/ mira.ca

PostPosted: Sat 16 Mar 2019, 10:08    Post subject:  

rockedge wrote:
. See what happens...

...happen that it work fine!!
hummm... controlling running CNC machine?
Should test linuxcnc/uspace,could it run?will see..

Thanks

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rockedge


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PostPosted: Sat 16 Mar 2019, 15:02    Post subject:  

Revolverve

I see from looking at the install options that it can use a RT kernel. And I think a Debian version would compile in Puppy Linux.

If I can find the source I will try to make a LinuxCNC with Puppy Linux Bionic as the OS
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rockedge


Joined: 11 Apr 2012
Posts: 1267
Location: Connecticut, United States

PostPosted: Sat 16 Mar 2019, 15:04    Post subject:  

maybe call it PuppyCNC......

Code:

2.1. Realtime

LinuxCNC is a machine tool controller, and it requires a realtime platform to do this job. This version of LinuxCNC supports three realtime platforms

RTAI

    From https://www.rtai.org. A Linux kernel with the RTAI patch is available from the Debian archive at http://www.linuxcnc.org. See Getting LinuxCNC for installation instructions.
Xenomai

    From https://xenomai.org. You will have to compile or obtain a Xenomai kernel yourself.
Preempt-RT

    From https://rt.wiki.kernel.org. A Linux kernel with the Preempt-RT patch is occasionally available from the Debian archive at https://www.debian.org, and from the wayback machine at https://snapshot.debian.org.

To make use of the realtime capabilities of LinuxCNC, certain parts of LinuxCNC need to run with root priviledges.


our RT kernel is a Preempt-RT type
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Revolverve


Joined: 08 Nov 2008
Posts: 232
Location: 45°17'28.8"N 72°16'08.8"W_avatar/ mira.ca

PostPosted: Mon 18 Mar 2019, 11:54    Post subject:  

rockedge wrote:
maybe call it PuppyCNC......


Would be glad to test one of these...do have a small working/testing cnc/2x parallel ports at home.
Does run Debiandog rtai fine.
Enjoy compiling brother...

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Revolverve


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PostPosted: Mon 18 Mar 2019, 12:47    Post subject:  

Look there source+ and
wiki.linuxcnc.org/cgi-bin/wiki.pl?Uspace or compile 3.4.9 rt-preempt as linuxcnc binairies are available...

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Revolverve


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PostPosted: Mon 18 Mar 2019, 13:22    Post subject:  

I am not the only one interested....
debiandog rtai topic views= 105k...in 5 years...

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Revolverve


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PostPosted: Fri 19 Apr 2019, 12:17    Post subject:  

No success here at compiling linuxcnc for x64 kernel,not an easy task.
Thanks ,midi/muse sequencer sfs like it.

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