title: PyCharm Running Out of Memory
body: <p>I've recently started getting an out of memory error while using PyCharm 5.0.4
  The message is: </p>
  
  <p><code>There's not enough memory to perform the requested operation.
   Please increase Xmx setting and shutdown PyCharm for change to take effect.</code></p>
  
  <p>I've already increased the value to 1024 MB, and to my knowledge nothing has changed in either my Python or system setups.</p>
  
  <p>What exactly does the size of the Xmx memory manage, and how would I go about debugging what's causing the issue?</p>