WebLogic NTSocketMuxer Threads Consuming 100% CPU When Native IO Is Enabled
(Doc ID 1456935.1)
Last updated on JULY 15, 2021
Applies to:Oracle WebLogic Server - Version 10.3.5 to 10.3.6
Information in this document applies to any platform.
Under the following configuration, incoming data will cause consumption of 100% CPU, and a restart of the server is necessary to recover.
- Tuxedo, version 18.104.22.168.0, 64-bit, Patch Level (none),
- Jolt libraries packaged with it from tuxedo11gR1\udataobj\jolt\,
- JSSE and nativeIO enabled on Microsoft Windows, and
- NTSocketMuxer is used.
The problem with each CPU core being consumed by weblogic.socket.NTSocketMuxer will appear visibly to happen in several steps as per the WebLogic Server (WLS) log files:
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