Bug ID 429122: istatsd has high CPU usage when segment files get corrupted

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0, 11.2.1 HF15

Opened: Aug 28, 2013
Severity: 3-Major
Related AskF5 Article:


If for some other reason the istats segment files became corrupted, then istatsd could use excessive CPU.


The high CPU use by istatsd could diminish resources available to other processes causing poor responsiveness for things like tmsh or web management.


The istats segment file became corrupted by some other problem.


Stop istatsd and remove the istats segment files. Then restart istatsd to recreate the segment files. This will cause all statistics in these files to be reset.

Fix Information

Even when there is corruption, istatsd will no longer use an excessive amount of CPU.

Behavior Change