Bug ID 670709: ping_access_agent process may silently restart when BIG-IP VE is installed on appliance with over 24 CPU cores

Last Modified: Jul 12, 2023

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1

Fixed In:

Opened: Jun 23, 2017

Severity: 3-Major

Related Article: K14321598


ping_access_agent service constantly restarts on BIG-IP VE when physical appliance has over 24 CPU cores.


ping_access_agent may restart continuously.


- BIG-IP is installed as VE - Hardware on which VE is installed has 24 or more CPU cores.


Modify /etc/bigstart/scripts/ping_access_agent file as follows: Existing last line: exec /usr/sbin/${service} -n ${cpu_count} Replacement last line, where A is a number of running TMMs: exec /usr/sbin/${service} -n A For example, when the BIG-IP VE is running 8 TMM processes, use the following example: exec /usr/sbin/${service} -n 8

Fix Information

The BIG-IP system now limits the number of ping_access_agent worker threads to the number of running TMMs. Therefore, the process no longer unexpectedly restarts when running on an appliance with a large number of CPU cores.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips