topic Re: CPU usage increase after nos7.4.1b firmware upgrade in Data Center (VDX)

CPU usage increase after nos7.4.1b firmware upgrade

BS_Choi — Mon, 19 Apr 2021 11:44:52 GMT

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
Rbridge-id: 1
Realtime Statistics:
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

Re: CPU usage increase after nos7.4.1b firmware upgrade

Michael_Andreas — Mon, 19 Apr 2021 12:22:56 GMT

Hi ,

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

Regards

Michael

Re: CPU usage increase after nos7.4.1b firmware upgrade

PearlineBashaw — Mon, 19 Apr 2021 13:26:58 GMT

Extensions and themes can cause Firefox to use more system resources than it normally would. To determine if an extension or theme is causing tellpopeyes to use too many resources, start Firefox in its Safe Mode and observe its memory and CPU usage.