Bug ID 742184: TMM memory leak

Last Modified: May 29, 2024

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

Known Affected Versions:,,,,,,,, 13.1.1,,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,

Fixed In:
15.0.0,, 13.1.3

Opened: Aug 30, 2018

Severity: 2-Critical


-- High TMM memory utilization; -- Aggressive sweeper activated; -- the 'packet', 'xdata' and 'xhead' caches in the memory_usage_stat tmstat table have high 'allocated' and 'curr_allocs' numbers with a steadily increasing profile.


Degraded performance, possible TMM crash due to out-of-memory condition.


A fastL4 and a L7 profile (e.g. HTTP) are assigned to a virtual server.


Do not add a L7 profile to a fastL4 virtual server.

Fix Information

No memory leak in the TMM. Note: there are limits to what L7 profiles such as HTTP can do when attached to fastL4 virtual servers, and this fix does not change them. For more information see: -- https://support.f5.com/csp/article/K16446 -- https://support.f5.com/csp/article/K16783

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips