Hi Folks,
Just my 2 cents on this..
[M/MX/T-series] Troubleshooting Checklist - Routing Engine High CPU is a good one…
https://kb.juniper.net/InfoCenter/index?page=content&id=KB26261
To do some analysis, capture the data equivalent to “show system process extensive” from router shell and analyze the behavior…
5 Days with snapshot for every 5 seconds
top -s 5 -d 86400 -n 100 >> /var/tmp/top.txt &
2 Days with snapshot for every 5 seconds
top -s 5 -d 34560 -n 100 >> /var/tmp/top.txt &
24 HOURS with snapshot for every seconds
top -s 1 -d 86400 -n 100 >> /var/tmp/top.txt &
24 HOURS with snapshot for every 5 seconds
top -s 5 -d 17280 -n 100 >> /var/tmp/top.txt &
1 HOUR with snapshot for every seconds
top -s 1 -d 3600 -n 100 >> /var/tmp/top.txt &
1 HOUR with snapshot for every 5 seconds
top -s 5 -d 720 -n 100 >> /var/tmp/top.txt &