}

	ts := make(map[string]madmin.TierStats)
	dui.TierStats.populateStats(ts)

	infos := make([]madmin.TierInfo, 0, len(ts))
	for tier, stats := range ts {
		infos = append(infos, madmin.TierInfo{
			Name:  tier,
			Type:  globalTierConfigMgr.TierType(tier),
			Stats: stats,
		})
	}

	sort.Slice(infos, func(i, j int) bool {
		if infos[i].Type == "internal" {
			return true
		}

    // Add two elements and invalidate them.
    cache.put(1, 4);
    cache.put(2, 8);

    cache.invalidateAll();

    assertThat(stats[0]).isEqualTo(2);
    assertThat(stats[1]).isEqualTo(2);
    assertThat(stats[2]).isEqualTo(4);
    assertThat(stats[3]).isEqualTo(3);
  }

  @Test
  public void putAll() {
    Cache<Integer, Integer> cache = CacheBuilder.newBuilder().build();

		Avg:  a.Avg,
		Max:  a.Max,
	}
	return w
}

// QStat holds queue stats for replication
type QStat struct {
	Count float64 `json:"count"`
	Bytes float64 `json:"bytes"`
}

func (q *QStat) add(o QStat) QStat {
	return QStat{Bytes: q.Bytes + o.Bytes, Count: q.Count + o.Count}
}

// InQueueMetric holds queue stats for replication
type InQueueMetric struct {
	Curr QStat `json:"curr" msg:"cq"`

 *             missCount}.
 *       </ul>
 *   <li>When an entry is evicted from the cache, {@code evictionCount} is incremented.
 *   <li>No stats are modified when a cache entry is invalidated or manually removed.
 *   <li>No stats are modified by operations invoked on the {@linkplain Cache#asMap asMap} view of
 *       the cache.
 * </ul>
 *

 *             missCount}.
 *       </ul>
 *   <li>When an entry is evicted from the cache, {@code evictionCount} is incremented.
 *   <li>No stats are modified when a cache entry is invalidated or manually removed.
 *   <li>No stats are modified by operations invoked on the {@linkplain Cache#asMap asMap} view of
 *       the cache.
 * </ul>
 *

	bucketReplStats := globalReplicationStats.Load().getAllLatest(dataUsageInfo.BucketsUsage)
	for _, bucket := range buckets {
		if s, ok := bucketReplStats[bucket]; ok {
			stats := s.ReplicationStats
			if stats.hasReplicationUsage() {
				for arn, stat := range stats.Stats {
					labels := []string{bucketL, bucket, targetArnL, arn}
					m.Set(bucketReplLastHrFailedBytes, float64(stat.Failed.LastHour.Bytes), labels...)

	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 {

	driveRealtimeMetrics := collectLocalMetrics(types, collectMetricsOpts{
		hosts: map[string]struct{}{
			globalLocalNodeName: {},
		},
	})

	stats := map[string]madmin.DiskIOStats{}
	for d, m := range driveRealtimeMetrics.ByDisk {
		stats[d] = m.IOStats
	}
	return stats
}

func (m *MetricValues) setDriveBasicMetrics(drive madmin.Disk, labels []string) {
	m.Set(driveUsedBytes, float64(drive.UsedSpace), labels...)

 * [okhttp-staleiferror-interceptor](https://github.com/PeelTechnologies/okhttp-staleiferror-interceptor/): serve stale responses when the server isn’t reachable.
 * [okhttp-stats](https://github.com/flipkart-incubator/okhttp-stats): Get stats like average network speed.

	}
	if types.Contains(madmin.MetricsRPC) {
		gr := globalGrid.Load()
		if gr == nil {
			m.Errors = append(m.Errors, fmt.Sprintf("%s: Grid not initialized", byHostName))
		} else {
			stats := gr.ConnStats()
			m.Aggregated.RPC = &stats
		}
	}
	// Add types...

	// ByHost is a shallow reference, so careful about sharing.
	m.ByHost = map[string]madmin.Metrics{byHostName: m.Aggregated}