Bug ID 635116: Memory leak when using replicated remote high-speed logging.

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 13.0.0

Fixed In:
13.1.0, 13.0.0 HF1, 12.1.2 HF1

Opened: Dec 20, 2016
Severity: 3-Major
Related AskF5 Article:


As a result of a known issue when a system uses a High Speed Logging (HSL) configuration with replication across the HSL pool TMM may leak memory.


TMM will leak memory at a rate proportional to the amount of logging. Over time this may cause an outage should TMM run out of memory.


Remote HSL setup with distribution set to replicated in the log destination configuration. More than one poolmember, and one of them becomes unavailable.


Do not use replication in the HSL destination configuration.

Fix Information

TMM no longer leaks memory when using a replicated HSL setup.

Behavior Change