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Forum Discussion

Livius's avatar
Livius
Icon for Cirrus rankCirrus
Apr 06, 2020

CPU data, control and analytics plane utilization

Hi everyone,   Wondering if there is any "quick" way of extracting the CPU statistics for Data, Control and Analytics plane utilization via iControl ? As far as I read,  Even-numbered logical co...
application delivery
iControl
Robert_F5's avatar
Robert_F5
Icon for Nimbostratus rankNimbostratus
Nov 08, 2024

Hi,

Thanks for the answer. Given the figure below, the average of odd-numbered CPUs represents the orange line (Control Plane), and the average of even-numbered CPUs represents the Data Plane, am I correct? What about Analysis Plane and System Average?

By the way, could you share the script or provide a link to access it?

Regards

welinton_trigueiro's avatar
welinton_trigueiro
Icon for Cirrus rankCirrus
Nov 08, 2024

Each CPU core is designated as data, control, or analytics, with all usage assigned to the core's designated category. Each even-numbered core is designated as a data plane, each odd-numbered core as a control plane, and the highest odd-numbered core as an analytics plane.

Analytics plane-related processes are typically pinned to the highest odd-numbered core, and no control or analytics processes have access to the even-numbered cores. The processes pinned to the analytics plane usually consume all available CPU cycles when running, which is why they are assigned to a single specific core.

This division occurs when the CPU supports Hyper-Threading Technology (HT Technology). Overview of the HTSplit feature - https://my.f5.com/manage/s/article/K23505424 

The BIG-IP VE system does not support this feature on generic hypervisors such as VMware ESX/i, where each vCPU will be allocated one TMM process.  https://my.f5.com/manage/s/article/K15468#tmsh 

If you are seeing control plane and data plane CPU statistics in the dashboard, this is related to bug I id 969329 - https://my.f5.com/manage/s/article/K000132982 

 

For some reason, I’m unable to upload the .zip file here in the post. Here’s the link with the script.