public void updatePutBlobProcessingTimeBySize(long blobSize, long processingTime) {
    if (blobSize <= ServerMetrics.smallBlob) {
      putSmallBlobProcessingTimeInMs.update(processingTime);
    } else if (blobSize <= ServerMetrics.mediumBlob) {
      putMediumBlobProcessingTimeInMs.update(processingTime);
    } else {
      putLargeBlobProcessingTimeInMs.update(processingTime);
    }
  }
Update put blob processing time based on blob size.
ambry-commons/src/main/java/com/github/ambry/commons/ServerMetrics.java