Bug ID 638115: DoS Visibility page on a system under stress can cause GUI timeouts and disconnections

Last Modified: Feb 04, 2023

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 10, 2017
Severity: 3-Major


On a system with a lot of AVR related data for DoS Attacks, it might take a while to load the data needed for display on DoS Visibility pages. GUI queries the backend for all the required data simultaneously, which can cause the web server to attempt to handle too many open connections, and result high CPU usage.


Instability in GUI usage. Performance degradation. Potential disconnections.


Large amounts of data for DoS Attacks



Fix Information

Optimizations were done both on the back-end/database side and on the GUI side. GUI will now throttle its queries to the server.

Behavior Change