Bug ID 1126581: Performance improvement for ASM signature engine

Last Modified: Mar 26, 2023

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

Fixed In:
17.1.0

Opened: Jul 14, 2022

Severity: 3-Major

Symptoms

Bot Defense (BD) consumes high CPU power when processing signatures on headers.

Impact

BD consumes high CPU power when processing header signatures.

Conditions

Header signatures are enabled on policy.

Workaround

None

Fix Information

A header-policy-signature cache is added which improves performance. A few additional changes are implemented which enables faster lookup of signature data.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips