Bug ID 596674: High memory usage when using CS features with gzip HTML responses.

Last Modified: Jul 18, 2026

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

Known Affected Versions:
12.1.1, 12.1.1 hf1, 12.1.1 hf2, 12.1.2, 12.1.2 hf1, 12.1.2 hf2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6

Fixed In:
13.0.0

Opened: Jun 01, 2016

Severity: 2-Critical

Symptoms

AVR use consumes a lot of memory while trying to decompress responses. This can cause tmm core during stress traffic.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- Enabled Dosl7d virtual server with CS features. -- The server is sending compressed responses.

Workaround

None.

Fix Information

High memory usage no longer occurs when using CS features with gzip HTML responses.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips