From owner-freebsd-java@FreeBSD.ORG  Mon Aug  2 09:27:48 2010
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Date: Mon, 02 Aug 2010 17:27:47 +0800
From: David Xu <davidxu@freebsd.org>
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Subject: java nio channel selectors can use kqueue/kevent
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I was suprised the java uses poll() on freebsd for its nio, while
others are using devpoll() or epoll(). I have spent one week to
work out a patch, and let it work with kqueue. I have tried to make
it better, but because the java nio selector are poll() centric
so something in the patch is not very perfect.

Here is the patch:
http://people.freebsd.org/~davidxu/patch/jdk16_nio_kqueue.patch

just cd into /usr/ports/jdk16, and type following commands:

make extract
make patch
cd work
patch < this_patch_file
cd ..
make install

note that the patch does not make kqueue method as default provider,
you should specify it on comand line like following:

java 
-Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.KqueueSelectorProvider 
<application class>


Regards,
David Xu