keepAliveCache.socketHealthCheck Is Causing A Severe Performance Degradation
Last updated on MAY 11, 2018
Applies to:Oracle WebLogic Server - Version 10.3.6 to 126.96.36.199
Information in this document applies to any platform.
WLS 10.3.6, NIO socket muxer is used
After setting -Dhttp.keepAliveCache.socketHealthCheckTimeout=1 (in this case, the cache is checking the health condition before returning the cached connection to the client for use), you are reporting a severe performance degradation.
Tracking the way ExecuteThread 36 evolves in the various thread dumps collected over the time we see:
From reading the source code, this implies that the socket read didn't timeout as it should.
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