Bug ID 578353: Statistics data aggregation process is not optimized

Last Modified: May 14, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP AFM, APM, ASM, AVR, PEM, SWG, vCMP(all modules)

Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 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

Symptoms

CPU spikes may occur every 5 minutes

Impact

High CPU usage may be observed every 5 minutes

Conditions

Occurs all the time

Workaround

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

Fix Information

The aggregation process of statistics in DB which is done using monpd should be optimized, and skip redundant updates of tables.

Behavior Change