Bug ID 641963: Average CPU usage is calculated differently in DOS Visability page

Last Modified: Nov 22, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP AVR(all modules)

Known Affected Versions:

Fixed In:
13.1.0, 13.0.0 HF1

Opened: Jan 27, 2017
Severity: 3-Major


On systems with HT Split CPU the Average CPU usage shown in DOS Visibility page was calculated as average of all available CPU-s. On other hand, on other screens it is calculated as an average of maximum of data plane and control plane CPU-s. It causes inconsistency in displayed data.


Inconsistency in CPU usage values displayed in DOS Visibility and other screens


HT Split is enabled on the system (tmsh list sys db scheduler.splitplanes.ltm results in "True")



Fix Information

After the fix on systems with HT Split average CPU usage is calculated only for data plane CPU-s. The GUI title is changed correspondingly.

Behavior Change