Hi, last time I had a kind of "bug-problem" i posted on this list. Then I was asked to create an JIRA issue. Now I created the issue upfront and want to discuss it here:
I've written a kind of RMI replacement uses MINA for network communication layer that is also able to transfer files very fast (without reflection and complex serialisation stuff). One of my customers faced a performance problem as soon as the receiving application part is running on Win7. I tried to create an reproducer: First I wrote a small test application using Java IO that simply transfers 1.000.000 bytes of random data from a client to a server. That's very fast. It doesn't matter if I try on localhost, or from WinXP->Win7 oder Win7->WinXP. Even Linux->Win7 is fast. Then I wrote the same kind of application with mina. No additional codec, nothing complex. I just transfer 100 IoBuffers with 10.000 bytes each from A to B. If I run the application on WinXP via localhost, it's very fast. <1sec runtime. If I run client and server in Win7, it's f*cking slow. Takes >1min to complete. Please find attached the test application. Just extract and run: java -cp MINASocketTransfer.jar;./lib/* minasockettransfer.Client <IP or Hostname of Server> java -cp MINASocketTransfer.jar;./lib/* minasockettransfer.Server The lib folder contains 2.0.0M6 and 2.0.0RC1. To switch from the one to the other version, simple "move" the tailing "_" to exclude the specified lib from classpath. Java-Source files are included in the MINASocketTransfer.jar ... I tested it with 2.0.0M6 and 2.0.0RC1. It's reproducible with both versions. --> https://issues.apache.org/jira/secure/attachment/12447232/MINASocketTransfer.zip <-- Has anyone observed a similiar behavior with Win7? br, Alex
