I am testing my application with the latest JDK using the -server switch
and I am seeing some strange behavior with the Swift side of the app. The
setup is NT4+SP6, Swift 2.1.0 and JDK 1.3.1. If I start the Swift router
first (as is the norm), then start my app, the cpu usage of the app stays
at 100%. If I start the app before the router the cpu behavior is as
expected. The difference in my code being. that if the router is present at
app startup all the normal connections are made, ready for sending
messages, but if the router is not present a timer is started to check for
the router every so often. Running the profiler with the -server switch
shows that the cpu is spending the vast majority of it's time in a socket
read of a particular thread as shown below:
java.net.SocketInputStream.socketRead(SocketInputStream.java:Native method)
java.net.SocketInputStream.read(SocketInputStream.java:86)
java.io.BufferedInputStream.fill(BufferedInputStream.java:186)
java.io.BufferedInputStream.read(BufferedInputStream.java:204)
java.io.DataInputStream.readInt(DataInputStream.java:338)
com.swiftmq.tools.dump.Dumpalizer.construct(Dumpalizer.java:50)
com.swiftmq.jms.ConnectionImpl.readObject(ConnectionImpl.java:339)
com.swiftmq.jms.ConnectionImpl.run(ConnectionImpl.java:424)
java.lang.Thread.run(Thread.java:484)
Note that this problem does not occur with the -hotspot switch so it is
probably a Sun problem, but I thought I would ask the list first to see if
anyone can shed some light on it.
TIA
Robert
PS It makes no difference if I start the router with -server or -hotspot,
only my application.
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