long _999_bytes = 999L;
        assertEquals("999 B", format.format(_999_bytes));
        assertEquals("999 B", format.format(_999_bytes, ScaleUnit.BYTE));
        assertEquals("1.0 kB", format.format(_999_bytes, ScaleUnit.KILOBYTE));
        assertEquals("0 MB", format.format(_999_bytes, ScaleUnit.MEGABYTE));
        assertEquals("0 GB", format.format(_999_bytes, ScaleUnit.GIGABYTE));

        long _1000_bytes = 1000L;

            if (size < 0L) {
                throw new IllegalArgumentException("file size cannot be negative: " + size);
            }

            if (size >= GIGABYTE.bytes()) {
                return GIGABYTE;
            } else if (size >= MEGABYTE.bytes()) {
                return MEGABYTE;
            } else if (size >= KILOBYTE.bytes()) {
                return KILOBYTE;
            } else {

	var splCount uint64
	for i, count := range h {
		szInt := ObjectsHistogramIntervals[i]
		switch {
		case humanize.KiByte == szInt.start && szInt.end == humanize.MiByte-1:
			// spl interval: [1024B, 1MiB)
			res[szInt.name] = splCount
		case humanize.KiByte <= szInt.start && szInt.end <= humanize.MiByte-1:
			// intervals that fall within the spl interval above; they
			// appear earlier in this array of intervals, see

	smallFileThreshold = 128 * humanize.KiByte // Optimized for NVMe/SSDs

	// For hardrives it is possible to set this to a lower value to avoid any
	// spike in latency. But currently we are simply keeping it optimal for SSDs.

	// bigFileThreshold is the point where we add readahead to put operations.
	bigFileThreshold = 128 * humanize.MiByte

	// XL metadata file carries per object metadata.