Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP APM
Known Affected Versions:
11.5.4, 11.5.5, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5
Fixed In:
14.0.0, 13.1.0.6, 13.0.1, 12.1.3.6, 11.6.3.2, 11.5.6
Opened: Sep 22, 2017 Severity: 3-Major Related Article:
K26451305
APM performance of handling HTTP request drops gradually when Kerberos SSO is being used over period of time. Websso process CPU usage is very high during this time. The latency can vary between APM end users.
Increased latency of HTTP request processing.
-- A large number of APM end users have logged on and are using Kerberos SSO. -- Running APM.
Reduce the number of cached Kerberos user tickets by lowering the cache lifetime.
LRU cache performance no longer drops linearly with the number of caches Kerberos tickets, the latency of HTTP request processing has been significantly improved.