Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP AFM, APM, ASM, AVR, PEM, SWG, vCMP
Known Affected Versions:
11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4
Fixed In:
12.1.0, 11.6.1 HF1, 11.5.4 HF2
Opened: Mar 07, 2016 Severity: 2-Critical
CPU spikes may occur every 5 minutes
High CPU usage may be observed every 5 minutes
Occurs all the time
For versions based on 11.5.4 and 11.6.0 take the following steps: 1. Edit the entry 'AggregationMode' under the /etc/avr/monpd/monpd.cfg file and set it to be 'low' instead of 'medium' or 'high'. 2.Restart Monpd afterwards. For 12.0.0 and on: tmsh modify sys db avr.stats.aggregation value low
The aggregation process of statistics in DB which is done using monpd should be optimized, and skip redundant updates of tables.