Chinese Mesa 7I92 from aliexpress NEW

Sekai wrote:

i tried with the ethtool but no change
 

after reading some more i disable AMT setting from bios but the value remain the same

Please fix the coalscing setting and report back also energy efficient Ethernet could impact from time to time if enabled.. 

you mean :
sudo ethtool -C enp0s25 rx-usecs 0
I did that, it does not change anything.

Changing the IRQ coalesce settings does improve the ping times noticeably on Intel hardware,
but your 4-5 ms  peak ping time indicates other issues, likely related to power management.

My system with Intel MAC and default IRQ coalesce settings:

PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.316 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.250 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.251 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.250 ms

Same system with IRQ coalecing off:

PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=0.116 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.106 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.107 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.106 ms



Have you disabled all power management in the system BIOS and grub?

Have you set isolcpus to the last CPU in the grub file?

Do you have idle=poll in the grub file as well?

(These are basic latency reducing steps for any LinuxCNC host)

linuxcnc.org/docs/html/install/latency-test.html
 

I ran the rt_setup.sh from this post and it gets worst now i have 6 ms
forum.linuxcnc.org/38-general-linuxcnc-q...irq-affinity?start=0

I disable evething i could in the bios but i dont have irq settings in the bios.

Hello can you share your e-mail, interested in knowing more about your adventure with this board.

Are you sure its an intel NIC? Its unusual to see an INTEL NIC with a enpxxx name.
If you have 2 NICs are you configuring the right one?

Yes, the lspci  list shows the only Ethernet is a Intel LM217

5 ms on Intel most likely means some power management is still enabled
maybe EEE or PCIE

Is this running on a laptop?

This is mini pc fujistu Q920
i disable about everything in the bios.
Still nothing
 
This is my current boot parameters with grub.Edit: I put linuxcnc on miniatx motherboard with intel i5 4460 and realtek RTL8168 ethernet.
 

On the Fujitsu also make sure that if it has the AMT feature
(common in corporate desktops), that it is disabled.

Also disable EEE and any PCIE power saving  in grub.

 

I did a