IBM Support

Slow performance or hang in HostName lookup

Troubleshooting


Problem

There is slow performance or a hang during HostName lookup.

Symptom

Thread dumps or javacore files taken during the time of the slow response, or "hang threads" will show threads with the following lines at the top of the stack:

at java.net.Inet6AddressImpl.getLocalHostName(Native Method)
at java.net.InetAddress.getLocalHost(InetAddress.java:123)

 

[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Java SDK","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"9.0;8.5.5;8.5;8.0;7.0","Edition":"Base;Express;Network Deployment","Line of Business":{"code":"LOB77","label":"Automation Platform"}},{"Type":"MASTER","Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSD28V","label":"WebSphere Application Server Liberty Core"},"ARM Category":[{"code":"a8m3p000000F7ylAAC","label":"IBM WebSphere Liberty-All Platforms-\u003EHang Performance CPU"}],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"}]

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Document Information

Modified date:
03 March 2025

UID

swg21170467