title: Change JVM JIT Options at runtime
body: <p>Is it possible to change options and/or modes of Java JVM (JIT) at runtime? E.g. change XX:CompileThreshold, or even switch between interpreted and compiled code (<code>-Xcomp</code> vs <code>-Xint</code>).</p>
  
  <p>My JVM is from OpenJDK (1.6), Hotspot or Zero/Shark</p>