Bug ID 1966141: Tcpdump performance improvement

Last Modified: Jul 28, 2026

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

Known Affected Versions:
F5OS-A 1.8.0, F5OS-A 1.8.1, F5OS-A 1.8.2, F5OS-A 1.8.3, F5OS-A 1.8.4, F5OS-A 1.8.4-HR1

Fixed In:
F5OS v2.0.0

Opened: Jun 06, 2025

Severity: 3-Major

Symptoms

There were a lot of drop logged for tcpdump when under large amount of traffic.

Impact

Tcpdump is capturing less than 1% of the traffic

Conditions

Send large amount of traffic.

Workaround

N/A

Fix Information

Performance of tcpdump is improved by restructuring tcpdumpd-master. The system no longer returns EAGAIN errors during high-volume traffic captures, resulting in more reliable packet capture

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips