Cannot seem to get good latency numbers!

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2 years 7 months ago #296948 by moazzam
Hi
Could somebody please see the figures and guide me about my system latency :

Max Jitter for Servo Thread (1ms): is 332463
Max Jitter for Base Thread (25us): is 346784

Histogram is

Is it good , bad or ugly to use this computer. 

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2 years 7 months ago #296956 by tommylight
From bad to ugly! :)
Enter the BIOS (search for you PC how to) and disable hyperthreading, TPM, virtualisation all, turbo, power saving everything, and something with "aggressive link management" regarding PCI-E.
The following user(s) said Thank You: moazzam

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2 years 7 months ago #296986 by rodw
also set isolcpus=2,3 in your boot options. The 2.9 iso has grub-customizer included to simplify this
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2 years 7 months ago #297015 by moazzam
Can you please elaborate the process for a novice like me.
Thankyou

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2 years 7 months ago - 2 years 7 months ago #297035 by moazzam
Thankyou!
I figured it out and just for the novices to LinuxCNC like me, I am adding screenshot as how to do it.
 

After saving the file you must execute command:  sudo update-grub

Note: I have added myself to root group. I don't know if it had played any role in it or not so if you get an error of permission get added to root group.

Now the latency is as below:
 

and graph is like:
 

 
Last edit: 2 years 7 months ago by moazzam. Reason: Forgot to mention updae-grub command

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2 years 7 months ago #297046 by tommylight
It just got beautiful ! :)
Now connect it to a machine and start making chips.

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