doc/guide/localhost/Drawbacks

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  26 <h1>Drawbacks</h1>
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  31 <div class="paragraph"><p>MLton has several drawbacks due to its use of whole-program
  32 compilation.</p></div>
  33 <div class="ulist"><ul>
  34 <li>
  35 <p>
  36 Large compile-time memory requirement.
  37 </p>
  38 <div class="paragraph"><p>Because MLton performs whole-program analysis and optimization,
  39 compilation requires a large amount of memory.  For example, compiling
  40 MLton (over 140K lines) requires at least 512M RAM.</p></div>
  41 </li>
  42 <li>
  43 <p>
  44 Long compile times.
  45 </p>
  46 <div class="paragraph"><p>Whole-program compilation can take a long time.  For example,
  47 compiling MLton (over 140K lines) on a 1.6GHz machine takes five to
  48 ten minutes.</p></div>
  49 </li>
  50 <li>
  51 <p>
  52 No interactive top level.
  53 </p>
  54 <div class="paragraph"><p>Because of whole-program compilation, MLton does not provide an
  55 interactive top level.  In particular, it does not implement the
  56 optional <a href="BasisLibrary">Basis Library</a> function <span class="monospaced">use</span>.</p></div>
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