Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6
Opened: Oct 31, 2018 Severity: 3-Major
The istats daemon maintains a file (/var/tmstat2/blade/archive.tm2) that is used to track the addition and deletion of dynamic statistics. It is possible for this file to grow so large that it causes the istats daemon to use too much CPU.
The istats daemon can use too much of the control plane CPU in this error condition.
This rarely happens, but it is due to loss of state, such that stale statistics are maintained when they should have been deleted.
Remove the /var/tmstat2/archive.tm2 file. The system recovers after one cycle of processing the archive file.
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