Feature: use different interpolation values for different logging events

lib/logger.js

@@ -91,13 +91,16 @@ exports.create = function(options) {
     logger.on('logging', function (transport, level) {
       switch(level) {
         case 'warn':
-          statsdClient.increment('logged.warn', 1, 0.1, logTags);
+          // Record 20% of warnings
+          statsdClient.increment('logged.warn', 1, 0.2, logTags);
           break;
         case 'error':
-          statsdClient.increment('logged.error', 1, 0.1, logTags);
+          // Record 50% of errors
+          statsdClient.increment('logged.error', 1, 0.5, logTags);
           break;
         case 'fatal':
-          statsdClient.increment('logged.fatal', 1, 0.1, logTags);
+          // Record 100% of fatal
+          statsdClient.increment('logged.fatal', 1, 1, logTags);
           break;
       }
     });