title: Does the ruby GIL have effect on the processes it starts?
body: <p>I have noticed that when I use cruby to run a muli-threaded java program via <code>Open3.capture3('java -jar multi-threaded.jar')</code>, most java threads are idle and the CPU is only busy on a single core. However, if I run the same javaprogram from bash, the CPU has near 100% utilization.</p>
  
  <p>Does the cruby GIL have an effect on programs run by <code>capture3</code>?</p>