Bug ID 1348869: Hourly spike in the CPU usage and lasts for fraction of second causing delay in TLS connections

Last Modified: Aug 28, 2024

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

Known Affected Versions:
16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 17.0.0, 17.0.0.1, 17.0.0.2, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3

Fixed In:
16.1.5

Opened: Sep 06, 2023

Severity: 4-Minor

Symptoms

1. Hourly spike in the CPU usage. 2. TMM Idle enforcer gets activated.

Impact

TMM Idle enforcer gets activated and causes a delay in TLS traffic and CPU Usage goes high.

Conditions

-- Clientssl profile assigned to a virtual server and passing traffic This occurs during normal operation while running an affected software version. This occurs after applying the db variable fix specified in ID 1306249 at https://cdn.f5.com/product/bugtracker/ID1306249.html.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips