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Mac OSX

Sometimes under certain loads test cases would fail when they are spinning up a large amount of client and server connections as a part of the test execution. The below setting seems to address some of the issues I have seen at least. It stands to reason that under a heavy load it would benefit a server outside of the test case environment as well.

> sudo sysctl -w kern.ipc.somaxconn=256

kern.ipc.somaxconn controls the size of the connection listening queue and typically only needs to be adjusted in high-performance server environments. The default value of 128 is more than adequate for a home/work machine and most workgroup servers. If, however, you are running a high-volume server and connections are getting refused at a TCP level, then you want to increase this. This is a very tweakable setting in such a case. Too high and you'll get resource problems as it tries to notify a server of a large number of connections and many will remain pending, and too low and you'll get refused connections.

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Contact the core Jetty developers at www.webtide.com
private support for your internal/customer projects ... custom extensions and distributions ... versioned snapshots for indefinite support ... scalability guidance for your apps and Ajax/Comet projects ... development services from 1 day to full product delivery