Bug ID 757985: TMM memory leak

Last Modified: Jul 07, 2020

Bug Tracker

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

Known Affected Versions:

Fixed In:

Opened: Feb 07, 2019
Severity: 3-Major
Related AskF5 Article:


-- TMM memory utilization baseline is slowly increasing. -- The 'allocated' column of the 'tcl' row in the memory_usage_stat tmctl table is high and is close to the 'max_allocated' value.


Degraded performance, and eventual out-of-memory condition that may trigger a TMM crash. Traffic disrupted while tmm restarts.


-- The header-insert option in a custom HTTP profile is configured. -- The profile is attached to a virtual server.


Instead of the profile header-insert, use HTTP::header iRule commands.

Fix Information

The header-insert option can now be configured in HTTP profiles without causing a TMM memory leak.

Behavior Change