Hi everyone, I recently upgraded the firmware to nos7.4.1b.
After firmware upgrade, CPU usage increased to 70%~80% on average.
When checking using the command “show process cpu”, l2sysd is high.
What does this daemon do, and I want to know why this daemon's CPU usage is high.
CA6-E-GCLOUD-PUB-6-L2-UP-12R13# show process cpu
Load Average: One minute: 2.56; Five minutes: 2.29; Fifteen minutes: 2.21
Total CPU Utilization:
Current: 59.00% (user procs:10.00%, system-kernel:50.00%, iowait:0.00%)
Active Processes Lifetime Statistic:
Legend(State): D - uninterruptible sleep R - running S - interruptible sleep
T - stopped W - paging X - dead Z - defunct zombie
PID Process CPU% State Started
3006 l2sysd 63.30 R 02:47:12 Apr 11, 2021
7777 sshd 24.10 S 13:09:38 Apr 19, 2021
4875 CBR_RX_DISPATCH 6.80 S 02:48:54 Apr 11, 2021
Best answer by Michael Andreas Dinius
it seems you possibly hit Field Notice FN-2020-456 VDX IPC-5024 fail messages and l2sysd and fab_vcsd unexpected reload.
The full field notice and suggested work around can be found here: https://extremeportal.force.com/ExtrArticleDetail?an=000090929