Using Netmaster analysis to diagnose CPU spikes in TCP/IP STC
Article ID: 125387
Updated On:
Products
NetMaster Network Automation
NetMaster Network Management for TCP/IP
NetMaster File Transfer Management
Issue/Introduction
Experiencing a sudden increase in the CPU utilization of the TCPIP STC over multiple weekends in PROD system.
Concerned about it might negatively affect overall CPU utilization.
Nothing in the TCP/IP log.
Looking for a way to analyze the TCPIP problem n NETMASTER (like what application used it, comparing TCPIPs previous datas, etc).
Environment
Resolution
Monitoring CPU is usually the domain of a SysView/Omegamon, but NetMaster can help in determining if things are out of the norm.
Check performance data within the product (shortcut is /PERF).
Baselining can be used to get a feel what is normal and what is not.
Review Stack Network Interfaces, Stack IP Connections, Address Spaces, Stack IP, TCP, and UDP, potentially even CSM - if it is being monitored - to see if there are any outliers.
There are many drill down capabilities showing hourly, daily, and weekly information.
For example, Stack IP Connections provides a simple number of Total connections.
It would be easy to see if there's been an increase in total number of connections and go from there.
Check performance data within the product (shortcut is /PERF).
Baselining can be used to get a feel what is normal and what is not.
Review Stack Network Interfaces, Stack IP Connections, Address Spaces, Stack IP, TCP, and UDP, potentially even CSM - if it is being monitored - to see if there are any outliers.
There are many drill down capabilities showing hourly, daily, and weekly information.
For example, Stack IP Connections provides a simple number of Total connections.
It would be easy to see if there's been an increase in total number of connections and go from there.
Feedback
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