Kemp Support, how can we help?

The latest application delivery knowledge and expertise at your fingertips.

Flow graph is flattened in traffic peaks

 

Information

 

Summary:

The flow graph (flows per second) in the Monitoring Center - Analysis is flattened for some or all flow sources. Especially when traffic rise is expected:

 

Environment:

Product: Flowmon Collector

Version: Any

Platform: Any

Question/Problem Description:

Flows are being dropped.

Steps to Reproduce:  
Error Message:  
Defect Number:  
Enhancement Number:  
Cause: The flow collection backend is overloaded.
Resolution:

1) Check the bandwidth for an interface collecting flow data (eth0 or eth1). Connect to SSH and run

sar -n DEV 1 3

2) In Distributed Architecture, check the link between proxy and slave units with the command above.

3) Disable syslog parsing in the Configuration Center - System - System Settings - Syslog Server. This feature can limit a listening port performance to about 50k flows per second. 

Workaround:  
Notes:  

Was this article helpful?
0 out of 0 found this helpful

Comments