high cpu utilization caused by nioserver factory thread
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Key: ZOOKEEPER-287
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-287
Project: Zookeeper
Issue Type: Bug
Components: server
Affects Versions: 3.0.1
Environment: Linux 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:58:04 EST 2007
i686 i686 i386 GNU/Linux
the servers were running in vmware vms
java version "1.6.0_06"
Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
Java HotSpot(TM) Client VM (build 10.0-b22, mixed mode)
Reporter: Patrick Hunt
Priority: Critical
a user reported that a long running server, part of a 2 server ensemble,
started using 100%cpu (1 server of the ensemble, the other was fine).
mahadev tracked it down to a thread in the server running epoll in a tight loop
- the thread was the nio server factory thread that selects on client fds.
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