rcharBytes      MetricName = "rchar_bytes"
	receivedBytes   MetricName = "received_bytes"
	latencyMilliSec MetricName = "latency_ms"
	sentBytes       MetricName = "sent_bytes"
	totalBytes      MetricName = "total_bytes"
	usedBytes       MetricName = "used_bytes"
	writeBytes      MetricName = "write_bytes"
	wcharBytes      MetricName = "wchar_bytes"

	latencyMicroSec MetricName = "latency_us"

        long totalBytes = bytesEncrypted.get() + additionalBytes;

        boolean needsRotation = (keyRotationBytesLimit > 0 && totalBytes >= keyRotationBytesLimit)
                || (keyRotationTimeLimit > 0 && timeSinceStart >= keyRotationTimeLimit);

        if (needsRotation) {
            log.info("Key rotation needed - bytes: {} / {} MB, time: {} / {} hours", totalBytes / (1024 * 1024),

		writesAwait:       "Average time for write requests to be served on a drive",
		percUtil:          "Percentage of time the disk was busy",
		usedBytes:         "Used bytes on a drive",
		totalBytes:        "Total bytes on a drive",
		usedInodes:        "Total inodes used on a drive",
		totalInodes:       "Total inodes on a drive",
		cpuUser:           "CPU user time",
		cpuSystem:         "CPU system time",