Bucket#sample doesn't need to be synchronized

class Metric(key: MetricKey) {

  val bucket = BucketFactory.new_bucket(key.mode)

  var rbuf = new RingBuffer[(Long, Double)](10)

  var rbuf = new RingBuffer[(Long, Double)](1000)

  var rbuf_seek_pos = 0

  // adds a value to this metric

  def sample(value: Double) = this.synchronized {

  def sample(value: Double) = {

    this.synchronized {

      bucket.flush_every(key.flush_interval, (

        (time, value) => flush_bucket(time, value) ))

    }

    bucket.sample(value)

  }