Bug ID 591060: APMD high CPU utilization

Last Modified: Sep 13, 2023

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

Known Affected Versions:
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, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6

Fixed In:
13.0.0

Opened: May 04, 2016

Severity: 3-Major

Symptoms

APMD is running at unexpectedly high CPU.

Impact

-- High CPU utilization. -- Configuration cannot be pushed to APMD after MCPD restarts.

Conditions

This occurs when both of the following conditions are met: -- The connection between APMD and MCPD is lost due to MCPD restart. -- APMD keeps reading from the stale socket.

Workaround

None.

Fix Information

APMD is now restarted when such an error condition is detected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips