Bug ID 1306249: Hourly spike in the CPU usage and lasts for fraction of second causing delay in TLS connections

Last Modified: Nov 14, 2023

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, 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

Opened: Jun 12, 2023

Severity: 3-Major

Symptoms

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

Impact

TMM CPU Usage goes high for about one second, which may cause a delay in traffic handling, and the Idle enforcer gets activated briefly.

Conditions

When DHE is enabled in the cipher suite for the SSL Profile.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips