code: public void recordGetAllTime(long timeNS,
                                   int requested,
                                   int returned,
                                   long totalValueBytes,
                                   long totalKeyBytes) {
          recordTime(Tracked.GET_ALL,
                     timeNS,
                     requested - returned,
                     totalValueBytes,
                     totalKeyBytes,
                     requested);
      }
docs: Record the duration of a get_all operation, along with how many values
  were requested, how may were actually returned and the size of the values
  returned.