Bug ID 1033761: BIG-IP consumes excessive CPU when "Log Translation Fields" are enabled in logging policy

Last Modified: Jan 06, 2023

Bug Tracker

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

Known Affected Versions:
15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,

Opened: Jul 15, 2021
Severity: 3-Major


CPU utilization is excessive when logging is enabled


High CPU usage while processing less number of packets


-- The traffic consists of UDP DNS requests being load-balanced to a back-end DNS responder. -- Caching is not being used. -- The virtual-server has a Firewall policy, a DDoS policy, a udp datagram-lb profile, and a security-log-profile (HSL). When the logging policy is present, the BIG-IP system consumes excessive CPU.


Do not use log-translations

Fix Information


Behavior Change