Bug ID 1063417: Bdosd consumes excessive CPU while not passing traffic.

Last Modified: Apr 28, 2025

Affected Product(s):
BIG-IP AFM(all modules)

Known Affected Versions:
16.0.1, 16.0.1.1, 16.0.1.2

Opened: Nov 22, 2021

Severity: 4-Minor

Symptoms

Bdosd consumes excessive CPU when the system is idle. sometimes it reaches approximately 99% CPU utilization.

Impact

As bdosd consumes more CPU, the system will enter into bad state or hangs.

Conditions

1. Over 1k virtual servers that have a DoS profile associated. 2. DoS attack triggered against all virtual servers.

Workaround

Change the l4bdos.collect.stats.frequency to 5 or 10.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips