Node.js: sending memory usage data to Metricfire

gistfile1.js

// Send process memory usage to Metricfire every ten seconds.
var metricfire = require("metricfire");

metricfire.init("your-api-key");

setInterval(function(){
     memusage = process.memoryUsage();
     metricfire.send("memoryusage.rss", memusage.rss);
     metricfire.send("memoryusage.heaptotal", memusage.heapTotal);
     metricfire.send("memoryusage.heapused", memusage.heapUsed);
  }, 10000);