Bug ID 778513: APM intermittently drops log messages for per-request policies

Last Modified: Apr 26, 2024

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

Known Affected Versions:
15.0.0, 15.0.1,,,,, 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,,, 15.1.9,, 15.1.10,,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,,, 16.1.4,,,, 17.0.0,,, 17.1.0,,,, 17.1.1,,,

Opened: May 01, 2019

Severity: 3-Major


APM may intermittently drop log messages, leading to missing information on policy execution or other events.


Administrator may fail to report certain logging events, hindering troubleshooting or auditing efforts.


This might occur under either of the following conditions: -- Using APM per-request policies, or ACCESS::log iRule commands. -- APM is configured to use multiple log destinations (such as: local-db and local-syslog).


No workaround is possible. When reviewing APM logs, keep in mind that during periods of high activity (greater than 100 log messages in 1-to-2 seconds) that the system may drop some log messages.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips