Bug ID 948717: F5-pf_daemon_cond_restart uses excessive CPU

Last Modified: Oct 11, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP Install/Upgrade, TMOS(all modules)

Known Affected Versions:
15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2

Fixed In:
16.1.0, 15.1.3.1

Opened: Sep 25, 2020
Severity: 3-Major

Symptoms

The script /etc/init.d/f5-pf_daemon_cond_restart spawns a lot of ephemeral processes that collectively use about 10-15% of a core, regardless of the number of cores. This is contributing to higher CPU usage after upgrading from an earlier version

Impact

Higher CPU utilization on control plane, typically the equivalent of about 10-15% (of one core) extra.

Conditions

On upgrade to a 15.1.x version, high CPU usage is observed.

Workaround

None.

Fix Information

None

Behavior Change