Bug ID 449920: Memory leak using compression on BIG-IP 2000-series and 4000-series appliances

Last Modified: Jan 29, 2026

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

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF2

Fixed In:
11.6.0, 11.5.1 HF3

Opened: Feb 22, 2014

Severity: 3-Major

Related Article: K15969

Symptoms

While running BIG-IP on 2000-series and 4000-series appliances with compression enabled, xdata memory usage rapidly increases and can result in an out-of-memory condition and subsequent TMM core.

Impact

Performance degradation followed by out-of-memory condition and traffic outage due to TMM core.

Conditions

BIG-IP 2000-series and 4000-series appliances with compression enabled in an active profile.

Workaround

n/a

Fix Information

A memory leak using compression on BIG-IP 2000-series and 4000-series appliances was resolved.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips