type BucketStatsMap struct {
	Stats     map[string]BucketStats
	Timestamp time.Time
}

// BucketStats bucket statistics
type BucketStats struct {
	Uptime           int64                  `json:"uptime"`
	ReplicationStats BucketReplicationStats `json:"currStats"`  // current replication stats since cluster startup
	QueueStats       ReplicationQueueStats  `json:"queueStats"` // replication queue stats

	// Proxy stats
	Proxied ProxyMetric `json:"proxied"`
	// replication metrics summary for each site replication peer
	Metrics map[string]SRMetric `json:"replMetrics"`
	// uptime of node being queried for site replication metrics
	Uptime int64 `json:"uptime"`

		Name:      startTime,
		Help:      "Start time for MinIO process per node, time in seconds since Unix epoc",
		Type:      gaugeMetric,
	}
}

func getMinIOProcessUptimeMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: processSubsystem,
		Name:      upTime,
		Help:      "Uptime for MinIO process per node in seconds",
		Type:      gaugeMetric,

	if !exists {
		return
	}

	var dur time.Duration
	if !bgSeq.lastHealActivity.IsZero() {
		dur = time.Since(bgSeq.lastHealActivity)
	}

	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(healMetricsNamespace, "time", "since_last_activity"),

| `minio_node_cpu_avg_idle`            | CPU idle time.                             |
| `minio_node_cpu_avg_idle_avg`        | CPU idle time (avg).                       |
| `minio_node_cpu_avg_idle_max`        | CPU idle time (max).                       |
| `minio_node_cpu_avg_iowait`          | CPU ioWait time.                           |

	processStarttimeSecondsMD         = NewGaugeMD(processStartTimeSeconds, "Start time for MinIO process in seconds since Unix epoc")
	processUptimeSecondsMD            = NewGaugeMD(processUptimeSeconds, "Uptime for MinIO process in seconds")

	gcStats := debug.GCStats{
		// If stats.PauseQuantiles is non-empty, ReadGCStats fills
		// it with quantiles summarizing the distribution of pause time.
		// For example, if len(stats.PauseQuantiles) is 5, it will be
		// filled with the minimum, 25%, 50%, 75%, and maximum pause times.
		PauseQuantiles: make([]time.Duration, 5),
	}
	debug.ReadGCStats(&gcStats)
	// Truncate GC stats to max 5 entries.
	if len(gcStats.PauseEnd) > 5 {

        /** JVM thread statistics */
        public JvmThreadsObj threads;
        /** JVM class loading statistics */
        public JvmClassesObj classes;
        /** JVM uptime in milliseconds */
        public long uptime;
    }

    /**
     * Data transfer object representing JVM memory statistics.
     */
    public static class JvmMemoryObj {
        /**
         * Default constructor.

        append(buf, "total_loaded", () -> classes.getTotalLoadedClassCount()).append(',');
        append(buf, "unloaded", () -> classes.getUnloadedClassCount());
        buf.append("},");
        append(buf, "uptime", () -> jvmStats.getUptime().getMillis());
        buf.append("},");
    }

    private void appendProcessStats(final StringBuilder buf) {
        buf.append("\"process\":{");

		qCache:          newQueueCache(r),
		pCache:          newProxyStatsCache(),
		srStats:         newSRStats(),
		movingAvgTicker: time.NewTicker(2 * time.Second),
		wTimer:          time.NewTicker(2 * time.Second),
		qTimer:          time.NewTicker(2 * time.Second),

		workers:  newActiveWorkerStat(r),
		registry: r,
	}
	go rs.collectWorkerMetrics(ctx)
	go rs.collectQueueMetrics(ctx)
	return &rs