I have developed a Java application that normally run on Linux. It's a POJO application with Swing. Performance is reasonably good.

Now I tried to run it on Windows XP with 2Gb RAM, in a machine with similar or greater potency, and performance is much worse. I observe that it uses 100% CPU.

For example:

  • A process that creates a window very heavy, with many components: Linux 5 seconds, Windows 12.

  • A process that accesses a PostgreSQL DB with a heavy query (the server and the JDBC driver are the same): 23 seconds Linux, Windows 43.

    I tried also with a virtualized Windows machine with similar features, and the result is significantly better!

    Is it normal? What parameters can I assign to improve performance?

java windows linux performance
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