Date: Sat, 17 Mar 2007 23:52:31 +0100 From: martinko <gamato@users.sf.net> To: freebsd-emulation@freebsd.org Subject: Re: linux-2.6.16 emulation: linux-sun-jdk1.6.0 program problem Message-ID: <ethrff$man$1@sea.gmane.org> In-Reply-To: <200703091218.39593.jkim@FreeBSD.org> References: <45C46416.3020406@melbpc.org.au> <20070309105622.cn1tpp1crw4gsw4g@webmail.leidinger.net> <20070309102300.GA31784@stud.fit.vutbr.cz> <200703091218.39593.jkim@FreeBSD.org>
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Jung-uk Kim wrote: > On Friday 09 March 2007 05:23 am, Divacky Roman wrote: >>>> 3. Running ftpserver (java application) displays a GUI window >>>> but terminates abruptly when the server is started (syscall >>>> epoll_create not implemented). >>> epoll* is not implemented. So this is expected (and gives more >>> priority to epoll). >> I dont understand why it should use epoll only with 2.6. Epoll has >> been around for some 5 years now... > > I guess Sun didn't think so. Check out: > > http://java.sun.com/javase/6/docs/technotes/guides/io/enhancements.html#6 > > 'A new java.nio.channels.SelectorProvider implementation that is based > on the Linux epoll event notification facility is included. The epoll > facility is available in the Linux 2.6, and newer, kernels. The new > epoll-based SelectorProvider implementation is more scalable than > the traditional poll-based SelectorProvider implementation when there > are thousands of SelectableChannels registered with a Selector. The > new SelectorProvider implementation will be used by default when the > 2.6 kernel is detected. The poll-based SelectorProvider will be used > when a pre-2.6 kernel is detected.' > > BTW, it was backported to 1.5 and available from Update 10: > > http://java.sun.com/j2se/1.5.0/ReleaseNotes.html#150_10 > > So, you will notice the same problem from 1.5.0_10, which is already > in ports tree for almost three months. > just a note: "The epoll-based implementation of SelectorProvider is not selected by default. To select it, specify a property value from the command line as follows: java -Djava.nio.channels.spi.SelectorProvider=sun.nio.ch.EPollSelectorProvider ... "
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