presto-hive/src/main/java/io/prestosql/plugin/hive/FileFormatDataSourceStats.java/FileFormatDataSourceStats/readDataBytesPerSecond
class FileFormatDataSourceStats:    public void readDataBytesPerSecond(long bytes, long nanos)
    {
        readBytes.add(bytes);
        if (bytes < 100 * 1024) {
            time0Bto100KB.add(nanos, NANOSECONDS);
        }
        else if (bytes < 1024 * 1024) {
            time100KBto1MB.add(nanos, NANOSECONDS);
        }
        else if (bytes < 10 * 1024 * 1024) {
            time1MBto10MB.add(nanos, NANOSECONDS);
        }
        else {
            time10MBPlus.add(nanos, NANOSECONDS);
        }
    }