Bug ID 1269989: tcam-manager may get stuck using 100% CPU

Last Modified: Feb 08, 2024

Affected Product(s):
F5OS F5OS(all modules)

Fixed In:
F5OS-C 1.6.0, F5OS-A 1.7.0, F5OS-A 1.5.0

Opened: Mar 10, 2023

Severity: 3-Major

Symptoms

After running a QKView or tcam-dump by itself, tcam-manager does not clean up the diagnostic socket, which results in a tight loop and pegging the CPU at 100% utilization. This in turn starves other platform processes (such as dma-agent), which causes performance degradation.

Impact

Performance degradation.

Conditions

A QKView or tcam-dump, which is included in QKView, is run.

Workaround

The issue can be avoided by not running QKView.

Fix Information

After tcam-dump completes, the corresponding socket is properly removed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips