Bug ID 619410: TMM hardware accelerated compression not registering for all compression levels.

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2

Opened: Sep 28, 2016
Severity: 3-Major


DEFLATE/gzip/zlib compression levels other than level 1 bypass the hardware accelerator and are serviced in software, resulting in higher CPU utilization and slower compression times.


Compression requests serviced by software are scheduled on local CPUs. During heavy compression traffic, overall system traffic flow may be reduced. Compression requests serviced in software may take significantly longer to complete.


-- Compression requests for DEFLATE/gzip/zlib levels other than level 1. -- BIG-IP devices using Coleto Creek SSL hardware acceleration.



Fix Information

Hardware accelerator correctly registers for all DEFLATE/gzip/zlib compression levels, not just level 1.

Behavior Change