qtplasmac (Operation Error: hm2/hm2_7i76e.0:) in middle of cut

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28 Jun 2024 23:57 #303996 by RMJ fabrication
I am unable to completely finish cutting out my parts. With every part I tried to cut this error stopped me right before the end of the process leaving me with almost cut out parts. Any insights into what is causing and how to prevent it this is greatly appreciated.
 
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29 Jun 2024 00:25 #303997 by phillc54
It looks like it may be ethernet latency  1  &  2  
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29 Jun 2024 02:43 - 29 Jun 2024 02:53 #303998 by PCW
"Watchdog has bit" usually means really bad latency (>5 ms)

Running

halcmd show param *.tmax

in a terminal when LinuxCNC is running
will give more information

What is the host hardware and clock speed?

Also do you have all power management/turbo modes/speedstep
etc disable in the BIOS?  Really bad latency is quite often related
to CPU power management.
Last edit: 29 Jun 2024 02:53 by PCW.
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29 Jun 2024 20:15 #304054 by RMJ fabrication
All power management is disabled in BIOS but I do have Intel turbo boost, C states, and Intel speedstep enabled. Here is the halcmd show param info 

and here is the hardware clockspeed info 
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29 Jun 2024 20:22 #304055 by PCW
You need to disable turbo boost, C states > C1 and speed-step

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03 Jul 2024 19:38 #304339 by RMJ fabrication
I am still getting the same error even after disabling these. Is there anything that can be done further maybe give the computer more margin for error if thats possible?

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03 Jul 2024 22:12 #304344 by tommylight
open a terminal and type
sensors
see what temperature the CPU is at while LinuxCNC is running, anything above 60 degree C should be mitigated by re-pasting the cooler or replacing the fan or with better cooling.
Some processors will handle over 90 degree, some Intel Xeons will throttle badly at 63 degree only!

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04 Jul 2024 01:07 - 04 Jul 2024 01:08 #304348 by PCW
Other things to check:

1. Do you have an Intel or Realtek Ethernet chip?
( there are chip specific things you can do to improve latency)

lshw -class network

Will list your Ethernet (and wireless) network hardware if you are not sure

2. Have you run a simple ping test like:

ping -i .2 -c 4 10.10.10.10
sudo chrt 99 ping -i .001 -q 10.10.10.10

(use 192.168.1.121 instead of 10.10.10.10 if your 7I76E is set for that IP address)

The first command populates the ARP cache so the ARP lookup doesn't add time to the first ping
The second command should be run for a few minutes (and then stopped with a control C)
and the results posted here.
 
Last edit: 04 Jul 2024 01:08 by PCW.

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08 Jul 2024 20:32 #304696 by RMJ fabrication
sensors at the time of error:
 
Also this is how I have my pc mounted with plexiglass. Should I holesaw a vent for it through the plexiglass? 
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08 Jul 2024 21:51 #304706 by tommylight
DAMN!!!!
That is 99 degree C all cores all the time, no wonder the PC is giving up it's ghosts, slowly and painfully! :)
The good thing is, you have it easy to remove the CPU cooler and clean both the CPU and cooler, then find some thermal paste and apply some to the CPU and mount the cooler back.
Tooth paste works instead of thermal paste, albeit for a day or two only.

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