Bug ID 510559: Add logging to indicate that compression engine is stalled.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1, 11.5.2, 11.5.3, 11.6.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.1, 11.5.4

Opened: Mar 04, 2015

Severity: 2-Critical


Hardware compression slowly and progressively fails to handle compression operations. The system posts the following errors in ltm.log: crit tmm3[14130]: 01010025:2: Device error: n3-compress0 Nitrox 3. If the compression engine stalls, there is no logging-trail to indicate there is a problem.


Compression completely stalls, or CPU can be driven up by software-based compression. No indication of what the issue is.


This occurs when the system encounters errors during hardware compression handling and the compression engine stalls.


Disable compression, or select 'software only' compression.

Fix Information

Previously, if the compression engine stalled, there would be no logging-trail to indicate there was a problem. This release adds logging and stats for detecting a compression engine stall.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips