Bug ID 1354977: TMM validating resolver performance dramatically decreases

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP DNS, LTM(all modules)

Known Affected Versions:
17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3

Opened: Sep 22, 2023

Severity: 2-Critical

Symptoms

The following are observed: - High TMM CPU usage - Performance degraded - The following TMSH command gets unresponsive # tmsh show ltm dns cache records rrset cache [DNS validating cache profile name] count-only

Impact

Performance is degraded.

Conditions

- Using Validating cache resolver - NSEC signing enabled

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips