title: code runs much more slowly on java 7u55 than prior versions?
body: <p>I have a java application that runs from a jar file.  I have a user who upgraded his mac to java 7u55 and says that the application is now running substantially more slowly than previously.  I don't know which version of Java he had installed previously.  I believe the jar file was generated using the 7u51 JDK.  Any idea why this should be the case?  Might it help to recompile the application with the newer Java version?</p>