title: Memory usage with high precision
body: <p>How can I get high precision memory usage per proccess with "ps aux"?</p>
  
  <pre><code>$ ps aux
  USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
  root         1  0.0  0.0   3672  1984 ?        Ss   Dec11   0:07 /sbin/init
  root         2  0.0  0.0      0     0 ?        S    Dec11   0:00 [kthreadd]
  root         3  0.0  0.0      0     0 ?        S    Dec11   0:23 [ksoftirqd/0]
  root         6  0.0  0.0      0     0 ?        S    Dec11   0:00 [migration/0]
  ...
  </code></pre>
  
  <p>I need more than 1 digit after point.
  Maybe I can format column with %MEM?</p>