Is my 7i76e about to expire?

I've been getting read errors more and more often.

Lately the hm2_7i76e.0.read.tmax has been hitting 15,000,000.
The machine will be running commands or just sitting there and hm2_7i76e.0.read.tmax will be around 400,000
and then bam it jumps up and errors out.

I have tried 3 different computers all with good latency numbers around 25,000ns.
All with Debian bullseye. Mate, xfce and LxQt have all been used with QtDragon and Probe Basic.

The machine has been operational for almost 2 years without any issues like this.
The errors started early this summer and have been getting more frequent.
I thought it might be heat related but it happened this morning right after a cold start.

I've read through many threads about trouble shooting this, nothing has had any effect. I'm thinking it's the 7i76e.

Any thoughts?

If you get a read error, does the /INIT LED light on the 7I76E?

What are the ping times?

(run for a minute or so while stressing the PC)

A long shot, but have you tried a different cable?

I know any Ethernet cable should work, but while fooling around running 'ping -i 0.002 <Mesa-7i96S-ip>' using an old CAT5E cable (3 m long) I got a noticeable amount of lost packets. After changing to a new CAT6 cable I got none. Not sure how significant it is (or if it would even show up as large tmax times) - but yeah, maybe worth a try?

Ping times are good:
cncv1@cncv1-1:~$ ping 10.10.10.10
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=0.133 ms
64 bytes from 10.10.10.10: icmp_seq=2 ttl=64 time=0.071 ms
64 bytes from 10.10.10.10: icmp_seq=3 ttl=64 time=0.069 ms
64 bytes from 10.10.10.10: icmp_seq=4 ttl=64 time=0.069 ms
64 bytes from 10.10.10.10: icmp_seq=5 ttl=64 time=0.071 ms

The INIT led has been on in the past.

This is so frustrating! I had half a dozen read errors in the first half hour this morning. Now its over two hours and I can't get it to fail.
This is what I have been seeing for the last couple of months. Many errors in a short time mixed with long run times with no errors!

Looking at tmax I can see its right on the edge:
cncv1@cncv1-1:~$ halcmd show param *.tmax  
Parameters:
Owner   Type  Dir         Value  Name
    42  s32   RW          85799  classicladder.0.refresh.tmax
    71  s32   RW          47605  dbmist.tmax
    68  s32   RW          68668  debounce.0.tmax
    36  s32   RW              0  hm2_7i76e.0.read-request.tmax
    36  s32   RW        2794658  hm2_7i76e.0.read.tmax
    36  s32   RW         383016  hm2_7i76e.0.write.tmax

Generally anything over 3000000 will cause the error.



 

If the /init light is on it suggests more of a host or al least
Ethernet communications issue.

Does dmesg show a link up/down transition?

The write tmax is quite bad also which points to a host issue

First change the cable, i had the same issue as ArviDB with a 5M cable, it would loose connection at random.
Then pay attention at the other equipment in the shop, what is turned on when connection gets flaky?