Bug ID 591060: APMD high CPU utilization

Last Modified: Apr 19, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6

Fixed In:

Opened: May 04, 2016
Severity: 3-Major


APMD is running at unexpectedly high CPU.


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


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.



Fix Information

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

Behavior Change