code: private String poolTputRatioData(double poolTputRatio, double poolRatio, double tputRatio,
                                       double smallerPoolTput, double largerPoolTput, int smallerPoolSize, int largerPoolSize) {
          StringBuilder sb = new StringBuilder();
          sb.append("\n ");
          sb.append(String.format(" poolTputRatio: %.3f", Double.valueOf(poolTputRatio)));
          sb.append(String.format(" poolRatio: %.3f", Double.valueOf(poolRatio)));
          sb.append(String.format(" tputRatio: %.3f", Double.valueOf(tputRatio)));
          sb.append("\n ");
          sb.append(String.format(" smallerPoolSize: %d", Integer.valueOf(smallerPoolSize)));
          sb.append(String.format(" largerPoolSize: %d", Integer.valueOf(largerPoolSize)));
          sb.append(String.format(" smallerPoolTput: %.3f", Double.valueOf(smallerPoolTput)));
          sb.append(String.format(" largerPoolTput: %.3f", Double.valueOf(largerPoolTput)));
          return sb.toString();
      }
docs: Utility method to format pool tput ratio data