Bug ID 1154465: Error attaching QAT devices to TMM on F5OS

Last Modified: May 29, 2024

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

Known Affected Versions:

Fixed In:
17.1.0, 15.1.8

Opened: Sep 13, 2022

Severity: 2-Critical


Crypto and compression yield low throughput. Tmm logs contain the following signature tmm1:<13> localhost notice This QAT device is not compress enabled: 0d:00.0. tmm1:<13> localhost notice This QAT device is not crypto enabled: 0d:00.0.


When this happens, some QAT devices are ignored (not used) and a significant drop in performance occurs for the impacted TMM thread.


-- Deploying tenants with crypto enabled -- Allocating more than 32 vCPUs -- F5QAT driver is used -- Other unknown conditions may contribute to this issue



Fix Information

Correctly parse the contents of the /sys/kernel/debug/<device>/dev_cfg file.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips