Bug ID 1144005: TPS drop of ~14% from F5OS-A 1.1.0 and later on r10000 series platforms

Last Modified: Dec 28, 2023

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

Known Affected Versions:
15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,, 17.1.0,,,, 17.1.1,

Opened: Aug 29, 2022

Severity: 1-Blocking


A TPS drop of approximately 12-14% was observed when running 512KB L7 HTTP tests on r10000 series platforms. Increased CPU usage, and larger tcp_lro receive packet sizes and some packet drops were observed when it is running with full capacity.


If F5OS software is upgraded from F5OS-A 1.0.0 to any later version, including F5OS-A 1.1.0, there will a maximum drop of 14% in TPS from device actually supported in F5OS-A 1.0.0.


Upgrading F5OS-A software version from 1.0.0 to a later software version.


No mitigation currently available.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips