high cpu usage independent from Traffic

Hi kgaigl , 
Follow this Article to troubleshoot on high CPU on your box : 

https://community.f5.com/t5/technical-articles/troubleshooting-high-cpu-utilisation-on-big-ip-systems/ta-p/280806

by the way, don't rely on Concurrent connections in your calculations , you have to monitor the Data plane itself on the ( Even-Cores ) and see it's percentage. 

>> use TOP command script on Bigip bash prompit , and see which process consumes much of CPU or send a snap shot form Top Command if you wish. 

In addition to what Mohamed_Ahmed_Kansoh  mentioned, if you're provisioning AVR module, it might cause high CPU utilization depending on how many virtual servers are using the analytics profile.

Also, the odd and even cores can be extracted from the CPU graph on ihealth portal. you can generate a new QKVIEW file, import it to any of your F5 accounts and navigate to "graphs" section. then, select "Blade 0 CPU Usage By Core" and filter by the even cores as Kansoh mentioned.

you can also try rebooting the device and check if the same CPU utilization occurring or not, because sometimes cleaning up files, and processes might hang out.

check out this article:

https://my.f5.com/manage/s/article/K48025015

Thanks,

Hello kgaigl ,

If you found Mohamed_Ahmed_Kansohs' reply matches your issue and the root cause, please accept his response as a solution to help others find the solution faster.

Thanks,

 the process is always java

I can see this with "top"

Thank you guys,

I disabled AVR and uploaded a Snapshot to iheath.

We'll try to find the Isssue with your help.

Karl

I guess it's this:

https://my.f5.com/manage/s/article/K28018443

no workaround, no fix 😞

for Info:

disabled DOS-Profile, didn't help, now opened a support case.

we will see...

from IHealth:

strange thing: every day the same time period from 9 am to about 2  pm

Hi Mohamed,

thank you, I got 30 Minutes ago the reply from F5 support with the same Info.

The Background Task of Obfuscation startet every day at 9:38 am, now I resceduled it to 10 pm

So it was apparently not realy a problem, but I was very concerned

Thank you guys for your help

Karl