Better Windows Networking with JDK 8u60

2015 April 10

JDK 8u60 contains two features that should improve the networking performance of Java applications on Windows under certain conditions.

JDK-8060170 makes Java use a loopback interface similar to Unix for localhost TCP connections.
JDK-8064407 makes Java use a system call similar to sendfile() when FileChannel.transferTo() is used.

These two patches have been contributed by Microsoft Open Technologies, Inc..

For now tese features are not enabled by default and have to be enabled by setting the following system properties to true.

-Djdk.net.useFastTcpLoopback=true \
-Djdk.net.enableFastFileTransfer=true