func BenchmarkVolumeZone(b *testing.B) {
	tests := []struct {
		Name      string
		Pod       *v1.Pod
		NumPV     int
		NumPVC    int
		NumNodes  int
		PreFilter bool
	}{
		{
			Name:      "with prefilter",
			Pod:       createPodWithVolume("pod_0", "PVC_Stable_0"),
			NumPV:     1000,
			NumPVC:    1000,
			NumNodes:  1000,
			PreFilter: true,
		},
		{
			Name:      "without prefilter",

	}

	if st.NumForcedGC > st.NumGC {
		t.Fatalf("NumForcedGC(%d) > NumGC(%d)", st.NumForcedGC, st.NumGC)
	}
}

func TestStringConcatenationAllocs(t *testing.T) {
	n := testing.AllocsPerRun(1e3, func() {
		b := make([]byte, 10)
		for i := 0; i < 10; i++ {
			b[i] = byte(i) + '0'
		}
		s := "foo" + string(b)
		if want := "foo0123456789"; s != want {
			t.Fatalf("want %v, got %v", want, s)
		}
	})

func updateMetrics(oldPod, newPod *v1.Pod) {
	var numEC int
	if oldPod != nil {
		numEC -= len(oldPod.Spec.EphemeralContainers)
	}
	if newPod != nil {
		numEC += len(newPod.Spec.EphemeralContainers)
	}
	if numEC != 0 {
		metrics.ManagedEphemeralContainers.Add(float64(numEC))
	}
}

// updatePodsInternal replaces the given pods in the current state of the

	//
	// This buffer is filled the same way as PauseNs. There may be
	// multiple pauses per GC cycle; this records the end of the
	// last pause in a cycle.
	PauseEnd [256]uint64

	// NumGC is the number of completed GC cycles.
	NumGC uint32

	// NumForcedGC is the number of GC cycles that were forced by
	// the application calling the GC function.
	NumForcedGC uint32

	var numGCs uint32
	const want = 2
	for i := 0; i < 200 && numGCs < want; i++ {
		time.Sleep(5 * time.Millisecond)

		// Test that periodic GC actually happened.
		runtime.ReadMemStats(&ms2)
		numGCs = ms2.NumGC - ms1.NumGC
	}
	*runtime.ForceGCPeriod = orig

	if numGCs < want {
		t.Fatalf("no periodic GC: got %v GCs, want >= 2", numGCs)
	}
}

func TestGcZombieReporting(t *testing.T) {

package debug

import (
	"runtime"
	"slices"
	"time"
)

// GCStats collect information about recent garbage collections.
type GCStats struct {
	LastGC         time.Time       // time of last collection
	NumGC          int64           // number of garbage collections
	PauseTotal     time.Duration   // total pause for all collections
	Pause          []time.Duration // pause history, most recent first

		u.Object["num"] = u.Object["numv2"]
		u.Object["content"] = u.Object["contentv2"]
		delete(u.Object, "numv2")
		delete(u.Object, "contentv2")
	} else if (currentAPIVersion == "stable.example.com/v1alpha1" || currentAPIVersion == "stable.example.com/v1beta1") && desiredAPIVersion == "stable.example.com/v1beta2" {
		u.Object["numv2"] = u.Object["num"]
		u.Object["contentv2"] = u.Object["content"]

		case "/gc/cycles/automatic:gc-cycles":
			checkUint64(t, name, samples[i].Value.Uint64(), uint64(mstats.NumGC-mstats.NumForcedGC))
		case "/gc/cycles/forced:gc-cycles":
			checkUint64(t, name, samples[i].Value.Uint64(), uint64(mstats.NumForcedGC))
		case "/gc/cycles/total:gc-cycles":
			checkUint64(t, name, samples[i].Value.Uint64(), uint64(mstats.NumGC))
		case "/gc/pauses:seconds":
			gcPauses = samples[i].Value.Float64Histogram()

	if change > 0 && headroom <= uint64(change) {
		l.overflow += uint64(change) - headroom
		l.bucket.fill = l.bucket.capacity
		if !enabled {
			l.enabled.Store(true)
			l.lastEnabledCycle.Store(memstats.numgc + 1)
		}
		return
	}

	// Handle non-limiting cases.
	if change < 0 && l.bucket.fill <= uint64(-change) {
		// Bucket emptied.
		l.bucket.fill = 0
	} else {
		// All other cases.

	fmt.Fprintf(w, "# NextGC = %d\n", s.NextGC)
	fmt.Fprintf(w, "# LastGC = %d\n", s.LastGC)
	fmt.Fprintf(w, "# PauseNs = %d\n", s.PauseNs)
	fmt.Fprintf(w, "# PauseEnd = %d\n", s.PauseEnd)
	fmt.Fprintf(w, "# NumGC = %d\n", s.NumGC)
	fmt.Fprintf(w, "# NumForcedGC = %d\n", s.NumForcedGC)
	fmt.Fprintf(w, "# GCCPUFraction = %v\n", s.GCCPUFraction)
	fmt.Fprintf(w, "# DebugGC = %v\n", s.DebugGC)

	// Also flush out MaxRSS on supported platforms.