title: Could not reserve enough space for object heap to start JVM
body: <p>Just faced with strange issue. When i type</p>
  
  <pre><code>java -version
  </code></pre>
  
  <p>i got</p>
  
  <pre><code>Error occurred during initialization of VM
  Could not reserve enough space for object heap
  Could not create the Java virtual machine.
  </code></pre>
  
  <p>.</p>
  
  <pre><code>java -Xms64m -Xmx64m -version
  </code></pre>
  
  <p>This command works fine</p>
  
  <pre><code>java version "1.6.0_24"
  Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
  Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode)
  </code></pre>
  
  <p>If i change xms, xmx to 128m, i get error again. </p>
  
  <p>Using <code>top</code> command and <code>free -m</code> i can see, that i got over 192 mb free, so why i still get this error ?</p>
  
  <pre><code>Mem:    262144k total,    64760k used,   197384k free,        0k buffers
  Swap:        0k total,        0k used,        0k free,        0k cached
  </code></pre>
  
  <p>Thank you</p>