Troubleshooting
Problem
If your Java application experiences high processor usage on an AIX® operating system, there are a number of diagnostic data files that are useful for diagnosing the problem. This mustgather document describes about the required settings to be in place in order to generate those diagnostic data files.
Resolving The Problem
In order to collect the diagnostic data files required for diagnosing the high processor usage problems, check that the following specific settings are configured before running your application:
1. Enable javacore generation
2. Enable core dump generation
3. Enable verbose GC collection
Please use -verbose:gc option for the same
4. Enable process sizes monitoring
5. Enable paging usage monitoring
6. Enable processor usage monitoring
Please note that both the javacore and core dump generation can be enabled using the below single Xdump option:
-Xdump:java+system:events=user
For more details about enabling these settings, please see the related information links.
Related Information
[{"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"100% CPU Usage","Platform":[{"code":"PF002","label":"AIX"}],"Version":"8.0;7.1;7.0;6.1;6.0;5.0","Edition":"J2SE","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
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Document Information
Modified date:
15 June 2018
UID
swg21222481