title: How can I increase the heap size of V8 which is compiled into MongoDB?
body: <p>I'm receiving warnings for V8 inside of MongoDB (v3) while running a map-reduce:</p>
  
  <pre><code>V8 GC epilogue heap stats -  total: 1477830040 exec: 2097152 used: 1474778864 limit: 1535115264
  </code></pre>
  
  <p>I'm wondering if there is a way to increase V8's heap size at runtime or recompile Mongo's V8 in such a way as to give me more room...</p>