Bug ID 1057561: Occasional Nitrox5 zip engine hang

Last Modified: Jan 14, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1

Opened: Oct 26, 2021
Severity: 3-Major

Symptoms

Occasionally the Nitrox5 zip engine hangs. In /var/log/ltm: crit tmm12[24794]: 01010025:2: Device error: n5-compress1 Nitrox 3, Hang Detected: compression device was reset (pci 09:01.5, discarded 1).

Impact

The Nitrox5 hardware compression system becomes unavailable and the compression mode switches to software compression. This can lead to high CPU usage.

Conditions

BIG-IP appliance that uses the Nitrox 5 hardware compression chip: i11800. You can check if your platform has the nitrox5 by running the following command: tmctl -w 200 compress -s provider provider -------- bzip2 lzo nitrox5 <---- qat-com zlib

Workaround

Disable http compression

Fix Information

None

Behavior Change