Jitter around 50,000,000 ns
- martyop
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06 Dec 2024 03:15 #316069
by martyop
Jitter around 50,000,000 ns was created by martyop
I installed debian 12 and then linuxcnc using the sudo apt install method on a computer that used to run linuxcnc on debian 10.
The jitter numbers are huge, around 50,000,000 ns. On debian 10 they were more like 50,000 ns.
What happened?
The jitter numbers are huge, around 50,000,000 ns. On debian 10 they were more like 50,000 ns.
What happened?
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- PCW
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06 Dec 2024 04:58 #316071
by PCW
Replied by PCW on topic Jitter around 50,000,000 ns
Are you sure you are running a real time kernel?
What does:
uname -a
report?
What does:
uname -a
report?
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- martyop
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07 Dec 2024 23:54 #316224
by martyop
Replied by martyop on topic Jitter around 50,000,000 ns
Thanks for your reply.
uname -a reports
Linux garage 6.1.0-28-rt-1md64 #1 SNP PREEMPT_RT Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux.
The garage computer has an intel atom processor.
uname -a reports
Linux garage 6.1.0-28-rt-1md64 #1 SNP PREEMPT_RT Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux.
The garage computer has an intel atom processor.
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- martyop
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08 Dec 2024 00:15 #316225
by martyop
Replied by martyop on topic Jitter around 50,000,000 ns
That should be -amd64 not -1md64, my typing error.
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- Carlates
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10 Dec 2024 06:49 - 12 Dec 2024 07:36 #316376
by Carlates
Replied by Carlates on topic Jitter around 50,000,000 ns
It is possible that the issue is related to the real-time kernel configuration on Debian 12. Please check if the kernel is compatible with LinuxCNC and make sure the system configuration is optimized for real-time.martyop post=316224 userid=3221
Thanks for your reply.
uname -a reports
doodle jump
Linux garage 6.1.0-28-rt-1md64 #1 SNP PREEMPT_RT Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux.
The garage computer has an intel atom processor.
Last edit: 12 Dec 2024 07:36 by Carlates.
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- tommylight
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10 Dec 2024 11:00 #316391
by tommylight
Replied by tommylight on topic Jitter around 50,000,000 ns
Are you using a parallel port or Mesa or Pico control boards?
In a terminal
latency-histogram --nobase --sbinsize 1000 --show
In a terminal
latency-histogram --nobase --sbinsize 1000 --show
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- CNC_ANDI
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10 Dec 2024 11:07 #316393
by CNC_ANDI
Replied by CNC_ANDI on topic Jitter around 50,000,000 ns
"sudo dpkg -i linux-image-6.6.7-rt18-linuxcnc_6.6.7-1_amd64.deb "
und wenn es nicht gut ist wieder mit löschen
"sudo apt purge linux-image-6.6.7-rt18-linuxcnc "
drive.google.com/drive/folders/1HceAcPQd...u4zS9?usp=share_link
und wenn es nicht gut ist wieder mit löschen
"sudo apt purge linux-image-6.6.7-rt18-linuxcnc "
drive.google.com/drive/folders/1HceAcPQd...u4zS9?usp=share_link
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