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RPI4 Raspbian 64 bit & LinuxCNC

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5 years 1 week ago #223572 by BigJohnT
Replied by BigJohnT on topic RPI4 Raspbian 64 bit & LinuxCNC
My latency was quite a bit worse and unusable I think.
 
JT

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5 years 1 week ago - 5 years 1 week ago #223604 by cakeslob
Replied by cakeslob on topic RPI4 Raspbian 64 bit & LinuxCNC
How is it with isolcpus 1,2,3?
Last edit: 5 years 1 week ago by cakeslob.

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5 years 1 week ago #223608 by tommylight
Replied by tommylight on topic RPI4 Raspbian 64 bit & LinuxCNC
I have seen worse, and worked quite reliably with Mesa 7i92.
Attach a Mesa board to it, leave it on for a day or two and do stuff occasionally see if it drops the link.
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5 years 1 week ago #223618 by rodw
Replied by rodw on topic RPI4 Raspbian 64 bit & LinuxCNC

I have seen worse, and worked quite reliably with Mesa 7i92.
Attach a Mesa board to it, leave it on for a day or two and do stuff occasionally see if it drops the link.
I also think this is fine for a Mesa card. I don't know if it will work on a PI but isolcpus=1,2,3 idle=poll  made a significant difference on my J1900

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5 years 1 week ago #223653 by BigJohnT
Replied by BigJohnT on topic RPI4 Raspbian 64 bit & LinuxCNC
I'm going to try with a 32 bit raspi os. This is just for testing my Rpi GPIO tool and figuring out the man page for hal_pi_gpio component.

JT

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5 years 1 week ago #223974 by elovalvo
Replied by elovalvo on topic RPI4 Raspbian 64 bit & LinuxCNC
But have you tried this newer version of the 64-bit Raspbian OS with Preempt-RT?

forum.linuxcnc.org/9-installing-linuxcnc...blem?start=90#217552

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