Dear,
we have Upgrade two MX80 from 12.3R8.7 to 15.1R7.9 (directly).
One of them looks fine (but he has lower BGP-Sessions and workload).
The other has now two times crash/freeze. First time as i have wrote "show | compare" at SSH-Connection, the second time, as rancid-service will receive the current configuration in the night.
In both times, the Router will become "freeze". No output in /var/log/messages, or /var/log/chassisd, no dump or something. Only on the Serial-Console i can see the following:
watchdog: scheduling fairness gone. Too much high-priority workload!
watchdog: scheduling fairness gone for 20 seconds now.
watchdog: scheduling fairness gone for 40 seconds now.
watchdog: scheduling fairness gone for 60 seconds now.
watchdog: scheduling fairness gone for 80 seconds now.
watchdog: scheduling fairness gone for 100 seconds now.
watchdog: scheduling fairness gone for 120 seconds now.
watchdog: scheduling fairness gone for 140 seconds now.
watchdog: scheduling fairness gone for 160 seconds now.
watchdog: scheduling fairness gone for 180 seconds now.
watchdog: scheduling fairness gone for 200 seconds now.
Only a hard-reset (power off/on) will be help.
Has anyone the same problem, or see it everywhere before?
Greets
Thomas