- Hardware & Machines
- Computers and OS's
- Results of latency test, list of computers tested for use with LinuxCNC
Results of latency test, list of computers tested for use with LinuxCNC
- tommylight
-
Topic Author
- Away
- Moderator
-
Less
More
- Posts: 14939
- Thank you received: 4999
15 Nov 2022 21:05 #256800
by tommylight
Replied by tommylight on topic Results of latency test, list of computers tested for use with LinuxCNC
While you are at it, can you please add a way to find out the IP address and gateway address and ping the gateway say 50 or 100 times and report the times?
That would be helpful to point out some PC's having issues with new kernels and network cards causing loss of connection to controler boards.
So far Intel network cards are OK, some just need setting IRQ coalesing to 0, some work out of the box.
Realtek cards have something wrong in the kernel, and despite having good ping times tend to drop the link consistently.
Not sure how usefull will that be due to above reasons, but maybe there is a pattern somewhere.
That would be helpful to point out some PC's having issues with new kernels and network cards causing loss of connection to controler boards.
So far Intel network cards are OK, some just need setting IRQ coalesing to 0, some work out of the box.
Realtek cards have something wrong in the kernel, and despite having good ping times tend to drop the link consistently.
Not sure how usefull will that be due to above reasons, but maybe there is a pattern somewhere.
Please Log in or Create an account to join the conversation.
15 Nov 2022 22:04 #256803
by seuchato
Replied by seuchato on topic Results of latency test, list of computers tested for use with LinuxCNC
At your service! I am currently looking into disc load. I will add this to the todo list. Is this important? If, I'll give it priority, say 3
. Rest will be in script development thread - soon.

The following user(s) said Thank You: tommylight
Please Log in or Create an account to join the conversation.
15 Nov 2022 22:23 #256809
by D.L.
Replied by D.L. on topic Results of latency test, list of computers tested for use with LinuxCNC
seuchato, I think new version of LinuxCNC(2.8.x) shows worse latency results, no matter what type of disk is used.
In the near future i will test LinuxCNC version 2.7.14 with SSD and with 5 glxgears, this will show the real effect on disk type changes.
In the near future i will test LinuxCNC version 2.7.14 with SSD and with 5 glxgears, this will show the real effect on disk type changes.
Please Log in or Create an account to join the conversation.
16 Nov 2022 13:39 #256859
by D.L.
Replied by D.L. on topic Results of latency test, list of computers tested for use with LinuxCNC
Attachments:
Please Log in or Create an account to join the conversation.
- tommylight
-
Topic Author
- Away
- Moderator
-
Less
More
- Posts: 14939
- Thank you received: 4999
16 Nov 2022 16:01 #256867
by tommylight
Replied by tommylight on topic Results of latency test, list of computers tested for use with LinuxCNC
Add
--show
At the end of latency-histogram command, there are spikes outside of visible area on both screenshots.
Those two colored columns at both sides of the plot in red and green or red and blue, those are spikes.
--show
At the end of latency-histogram command, there are spikes outside of visible area on both screenshots.
Those two colored columns at both sides of the plot in red and green or red and blue, those are spikes.
The following user(s) said Thank You: seuchato
Please Log in or Create an account to join the conversation.
- Hardware & Machines
- Computers and OS's
- Results of latency test, list of computers tested for use with LinuxCNC
Time to create page: 0.182 seconds