// held
      chain = segment.newEntry(key, cache.hash(key), chain);
      if (i == 0) {
        head = chain;
      }
    }
  }

  @SuppressWarnings("GuardedBy")
  @Benchmark
  int time(int reps) {
    int dummy = 0;
    for (int i = 0; i < reps; i++) {
      // TODO(b/145386688): This access should be guarded by 'this.segment', which is not currently
      // held

	mg := &MetricsGroupV2{
		cacheInterval:    10 * time.Second,
		metricsGroupOpts: opts,
	}
	mg.RegisterRead(func(_ context.Context) (metrics []MetricV2) {
		lastSyncTime := atomic.LoadUint64(&globalIAMSys.LastRefreshTimeUnixNano)
		var sinceLastSyncMillis uint64
		if lastSyncTime != 0 {
			sinceLastSyncMillis = (uint64(time.Now().UnixNano()) - lastSyncTime) / uint64(time.Millisecond)
		}

	lastUpdatedAt := user2.Account.UpdatedAt
	time.Sleep(time.Second)

	if err := DB.Session(&gorm.Session{FullSaveAssociations: true}).Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user4 User
	DB.Preload("Account").Find(&user4, "id = ?", user.ID)

	if lastUpdatedAt.Format(time.RFC3339) == user4.Account.UpdatedAt.Format(time.RFC3339) {

package cmd

import (
	"context"
	"time"
)

type rebalPoolProgress struct {
	NumObjects  uint64        `json:"objects"`
	NumVersions uint64        `json:"versions"`
	Bytes       uint64        `json:"bytes"`
	Bucket      string        `json:"bucket"`
	Object      string        `json:"object"`
	Elapsed     time.Duration `json:"elapsed"`
	ETA         time.Duration `json:"eta"`
}

				var duration time.Duration
				// Only support UTC normalized timestamps.
				if ts.IsAdjustedToUTC {
					switch {
					case ts.Unit.IsSetNANOS():
						duration = time.Duration(val) * time.Nanosecond
					case ts.Unit.IsSetMILLIS():
						duration = time.Duration(val) * time.Millisecond
					case ts.Unit.IsSetMICROS():
						duration = time.Duration(val) * time.Microsecond
					default:

func (sys *BucketMetadataSys) GetBucketPolicy(bucket string) (*policy.BucketPolicy, time.Time, error) {
	meta, _, err := sys.GetConfig(GlobalContext, bucket)
	if err != nil {
		if errors.Is(err, errConfigNotFound) {
			return nil, time.Time{}, BucketPolicyNotFound{Bucket: bucket}
		}
		return nil, time.Time{}, err
	}
	if meta.policyConfig == nil {
		return nil, time.Time{}, BucketPolicyNotFound{Bucket: bucket}
	}

		// lk1; ref=1
		if !nsLk.lock(ctx, "volume", "path", "source", "opsID", false, time.Second) {
			t.Fatal("failed to acquire lock")
		}

		// lk2
		lk2ch := make(chan struct{})
		go func() {
			defer close(lk2ch)
			nsLk.lock(ctx, "volume", "path", "source", "opsID", false, 1*time.Millisecond)
		}()
		time.Sleep(1 * time.Millisecond) // wait for goroutine to advance; ref=2

    // we try hard to make them robust in practice.  We could additionally try to add in a system
    // load timeout multiplier.  Or we could try to use a CPU time bound instead of wall clock time
    // bound.  But these ideas are harder to implement.  We do not try to detect or handle a
    // user-specified -XX:+DisableExplicitGC.
    //
    // TODO(user): Consider using

}

func bootstrapTrace(msg string, worker func()) {
	if serverDebugLog {
		fmt.Println(time.Now().Round(time.Millisecond).Format(time.RFC3339), " bootstrap: ", msg)
	}

	now := time.Now()
	worker()
	dur := time.Since(now)

	info := madmin.TraceInfo{
		TraceType: madmin.TraceBootstrap,
		Time:      UTCNow(),
		NodeName:  globalLocalNodeName,
		FuncName:  "BOOTSTRAP",

		lookupHost = net.DefaultResolver.LookupHost
	}

	if baseDialCtx == nil {
		// This is same as which `http.DefaultTransport` uses.
		baseDialCtx = (&net.Dialer{
			Timeout:   30 * time.Second,
			KeepAlive: 30 * time.Second,
		}).DialContext
	}

	return func(ctx context.Context, network, addr string) (conn net.Conn, err error) {
		host, port, err := net.SplitHostPort(addr)
		if err != nil {
			return nil, err