Bug ID 776073: OOM killer killing tmmin system low memory condition as process OOM score is high

Last Modified: Jul 16, 2019

Bug Tracker

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

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.4, 14.1.0.5, 14.1.0.6, 15.0.0

Opened: Apr 24, 2019
Severity: 4-Minor

Symptoms

When BIG-IP system running under low memory situation, Out-Of-Memory killer more likely selects tmm to kill and release the resources.

Impact

Traffic disrupted while tmm restarts.

Conditions

BIG-IP version 13.0.x or later installed and system running with low memory. AFM provisioned makes the tmm process more likely to be selected by the oom killer

Workaround

Adjust OOM score of "tmm" process through oom_score_adj proc setting. echo "-500" > /proc/<pid_of_tmm>/oom_score_adj

Fix Information

None

Behavior Change