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I need an answer
3 years 9 months ago #261994
by PCW
Replied by PCW on topic I need an answer
Also note:
Intel MACS need to have IRQ coalescing disabled
This is described in the hm2_eth man page
Intel MACS need to have IRQ coalescing disabled
This is described in the hm2_eth man page
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3 years 9 months ago #262077
by acourtjester
Replied by acourtjester on topic I need an answer
Thanks for your reply, understand I am a newbie with Linuxcnc. After searching the web (and search here) to seem if I could understand the IRQ coalescing disable.
You had suggested using the command sudo ethtool -C enp0s25 rx-usecs 0 to see if that cleared up the problem. I understand that is not a real fix, just a test. I will do that, also other info talks about disabling
vitualization in the BIOS of the PC may help as a fix
If I am incorrect please elaborate
You had suggested using the command sudo ethtool -C enp0s25 rx-usecs 0 to see if that cleared up the problem. I understand that is not a real fix, just a test. I will do that, also other info talks about disabling
vitualization in the BIOS of the PC may help as a fix
If I am incorrect please elaborate
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3 years 9 months ago #262078
by PCW
Replied by PCW on topic I need an answer
Yes,
sudo ethtool -C enp0s25 rx-usecs 0
will only change the IRQ setting until the next reboot
But it should improve network latency, which you can test by pinging the FPGA card
before and after the ethtool command
To make the fix permanent, you add the command to the interfaces file as described
in the hm2_eth manual page
sudo ethtool -C enp0s25 rx-usecs 0
will only change the IRQ setting until the next reboot
But it should improve network latency, which you can test by pinging the FPGA card
before and after the ethtool command
To make the fix permanent, you add the command to the interfaces file as described
in the hm2_eth manual page
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3 years 9 months ago #262133
by acourtjester
Replied by acourtjester on topic I need an answer
There seems to be no change in the ping times, left after boot and right after command installed.
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3 years 9 months ago #262146
by PCW
Replied by PCW on topic I need an answer
Those ping times suggest that you are not pinging the FPGA card but the host itself
(that is you have the host IP address set to 10.10.10.10 rather than say 10.10.10.100)
(that is you have the host IP address set to 10.10.10.10 rather than say 10.10.10.100)
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3 years 9 months ago #262149
by acourtjester
Replied by acourtjester on topic I need an answer
Ok how and where do I change it I am a fish out of water
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3 years 9 months ago #262150
by PCW
Replied by PCW on topic I need an answer
In the IPV4 tab, set the IP address to 10.10.10.X
Where X is not 0, 1, 10, or 255
Also disable IPV6 addressing
Where X is not 0, 1, 10, or 255
Also disable IPV6 addressing
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3 years 9 months ago #262151
by acourtjester
Replied by acourtjester on topic I need an answer
Do I need to remove and enter it as a new connection???
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3 years 9 months ago #262153
by PCW
Replied by PCW on topic I need an answer
No, you edit the existing connection
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3 years 9 months ago #262161
by acourtjester
Replied by acourtjester on topic I need an answer
it dose not change the numbers in the box. I have change them in IPv4 and click apply and nothing happens thanks for hanging with me on this
I understand how hard it is to remote troubleshoot, I have done it many times, just not with Linuxcnc
I understand how hard it is to remote troubleshoot, I have done it many times, just not with Linuxcnc
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