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RPI4 Raspbian 64 bit & LinuxCNC

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6 years 2 months ago #178546 by phillc54
Replied by phillc54 on topic RPI4 Raspbian 64 bit & LinuxCNC
This is an overnight run with 10 glxgears:
Warning: Spoiler!

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6 years 2 months ago #178555 by bevins
Replied by bevins on topic RPI4 Raspbian 64 bit & LinuxCNC
Right off the bat I got latency issues with the standard servo thread with a pncconf config. Tried dropping it and it got worse.
Thats with 7i92/7i76 connected and running.

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6 years 2 months ago #178564 by phillc54
Replied by phillc54 on topic RPI4 Raspbian 64 bit & LinuxCNC
I should have added that I had "processor.max_cstate=1" in /boot/cmdline.txt

This is a brief test with "processor.max_cstate=1 isolcpus=2,3" in /boot/cmdline.txt and 5 glxgears running.

Warning: Spoiler!
The following user(s) said Thank You: elovalvo, rdtsc

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6 years 1 month ago #181530 by AgentWD40
Replied by AgentWD40 on topic RPI4 Raspbian 64 bit & LinuxCNC
So is that good? Can I run a 7i96 with this?

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6 years 1 month ago #181535 by phillc54
Replied by phillc54 on topic RPI4 Raspbian 64 bit & LinuxCNC
I have mine running a 7i96 with a 2mS servo thread.

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6 years 1 month ago #181541 by AgentWD40
Replied by AgentWD40 on topic RPI4 Raspbian 64 bit & LinuxCNC
Is that good or bad or meh? Sorry, I have no frame of reference for this.

You're using this on an actual machine in production? Or at least would you trust it to run a milling job for any length of time?

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