lib/operations/db_ops.js
function profilingInfo(db, options, callback) {
  try {
    db
      .collection('system.profile')
      .find({}, options)
      .toArray(callback);
  } catch (err) {
    return callback(err, null);
  }
}
function profilingInfo(db, options, callback) {
  try {
    db
      .collection('system.profile')
      .find({}, options)
      .toArray(callback);
  } catch (err) {
    return callback(err, null);
  }
}
function profilingInfo ( db , options , callback ) { try { db . collection ( 'system.profile' ) . find ( { } , options ) . toArray ( callback ) ; } catch ( err ) { return callback ( err , null ) ; } }
Retrieve the current profiling information for MongoDB

@method
@param {Db} db The Db instance on which to retrieve the profiling info.
@param {Object} [options] Optional settings. See Db.protoype.profilingInfo for a list of options.
@param {Db~resultCallback} [callback] The command result callback.
@deprecated Query the system.profile collection directly.
Retrieve the current profiling information for MongoDB