Bug ID 425182: vmem_alloc takes excessive time, resulting in heartbeat failure.

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.2.1, 11.3.0, 11.4.1

Fixed In:
11.5.0, 11.5.0, 11.4.1 HF6

Opened: Jul 15, 2013
Severity: 2-Critical
Related Article:
K15600

Symptoms

System is under memory pressure, umem slabs are constantly being created and destroyed. Repeated TMM SIGABRTs in vmem_alloc.

Impact

The BIG-IP system slows down and becomes unstable.

Conditions

High memory usage of network buffers.

Workaround

None.

Fix Information

Improvements have been made to the way the system handles memory pressure, so the system does not slow down or become unstable.

Behavior Change