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

				if err != nil {
					err = msgp.WrapError(err, "Metrics", za0001)
					return
				}
				z.Metrics[za0001] = za0002
			}
		case "Uptime":
			z.Uptime, err = dc.ReadInt64()
			if err != nil {
				err = msgp.WrapError(err, "Uptime")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

        /** 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.

| `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.                           |

	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"),

		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

		totalInodes:       "Total inodes on a drive",
		cpuUser:           "CPU user time",
		cpuSystem:         "CPU system time",
		cpuIdle:           "CPU idle time",
		cpuIOWait:         "CPU ioWait time",
		cpuSteal:          "CPU steal time",
		cpuNice:           "CPU nice time",
		cpuLoad1:          "CPU load average 1min",
		cpuLoad5:          "CPU load average 5min",
		cpuLoad15:         "CPU load average 15min",

				st.BandWidthLimitInBytesPerSecond = bw.LimitInBytesPerSecond
				st.CurrentBandwidthInBytesPerSecond = bw.CurrentBandwidthInBytesPerSecond
				stats.ReplicationStats.Stats[arn] = st
			}
		}
	}
	stats.Uptime = UTCNow().Unix() - globalBootTime.Unix()

	if err := enc.Encode(stats); err != nil {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
}

| `minio_system_cpu_nice`       | CPU nice time. <br><br>Type: gauge                      | `server` |
| `minio_system_cpu_steal`      | CPU steal time. <br><br>Type: gauge                     | `server` |
| `minio_system_cpu_system`     | CPU system time. <br><br>Type: gauge                    | `server` |
| `minio_system_cpu_user`       | CPU user time. <br><br>Type: gauge                      | `server` |

        assertEquals(fileAttributes, response.getAttributes());
        assertEquals(fileSize, response.getSize());

        // Verify time was read correctly (accounting for UTime conversion)
        long readTime = (Long) getFieldValue(response, "lastWriteTime");
        // UTime is seconds since 1970, so we need to compare at second precision
        assertEquals(lastWriteTime / 1000, readTime / 1000);
    }

    @Test