Mach3 -> Camtronics -> Parallel P Replacement

More
27 Mar 2020 16:46 #161719 by rdeeming
To be perfectly transparent here, I actually had to look up qtvcp.. That's how shallow my knowledge of linuxcnc is right now. :-)

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 16:50 #161721 by BeagleBrainz
Not really a necessity, I just threw it in as a convenience, for those that wanted\need it.

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 16:59 #161723 by PCW

I checked the BIOS on this ZBOXNANO-AD12 PC and its as up to date as possible. Version 2K131128.


Ahh this is a relatively low powered PC, the Ethernet performance is probably more related to that than the
Realtek driver (which I have not noticed any real issues with)


What does

latency-histogram --nobase -- sbinsize 1000

show?

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 17:12 #161724 by rdeeming
Attachments:

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 17:57 #161726 by PCW
Right so there's considerable native jitter being added to the ping times

Here's the same plot from the system with the ping times I posted:




Note that that has isolcpus=3 but that does not make much difference on this machine
Attachments:

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 17:58 - 27 Mar 2020 18:00 #161727 by rdeeming
Is what I am building on projected to be a problem down the road for a 3 axis config?
Last edit: 27 Mar 2020 18:00 by rdeeming.

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 19:03 #161733 by tommylight

To be perfectly transparent here, I actually had to look up qtvcp.. That's how shallow my knowledge of linuxcnc is right now. :-)

You are moving slowly towards the deep end ! :)

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 20:20 #161743 by PCW

Is what I am building on projected to be a problem down the road for a 3 axis config?


It should not really be an issue, worst case is that it cannot do a 1 KHz servo thread, but 750 0r 500 Hz is OK for most
applications

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 20:37 #161745 by rdeeming
I dug another system out of the basement.

Please Log in or Create an account to join the conversation.

More
27 Mar 2020 21:19 #161752 by rdeeming
Attachments:

Please Log in or Create an account to join the conversation.

Time to create page: 0.186 seconds
Powered by Kunena Forum