Bug ID 1128689: Performance improvement in signature engine

Last Modified: Mar 23, 2023

Bug Tracker

Affected Product:  See more info
BIG-IP ASM(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 25, 2022
Severity: 3-Major


The signature engine in BD uses more CPU cycles than it actually needs to complete the task.


Slower system performance High CPU utilization with BD


ASM provisioned and in use


For header-based signatures that appear on the top in ACY_PERF, the header exclusions can be added only on explicit headers. This should decrease the CPU usage.

Fix Information


Behavior Change