diff --git a/info/v2/container.go b/info/v2/container.go
index f0824027a3..7845fe4c48 100644
--- a/info/v2/container.go
+++ b/info/v2/container.go
@@ -200,6 +200,8 @@ type Percentiles struct {
 	Ninety uint64 `json:"ninety"`
 	// 95th percentile over the collected sample.
 	NinetyFive uint64 `json:"ninetyfive"`
+	// Number of samples used to calculate these percentiles.
+	Count uint64 `json:"count"`
 }
 
 type Usage struct {
diff --git a/summary/percentiles.go b/summary/percentiles.go
index 8ce706ad9e..bca056e9f0 100644
--- a/summary/percentiles.go
+++ b/summary/percentiles.go
@@ -109,6 +109,7 @@ func (r *resource) AddSample(val uint64) {
 		Fifty:      val,
 		Ninety:     val,
 		NinetyFive: val,
+		Count:      1,
 	}
 	r.Add(sample)
 }
@@ -121,6 +122,8 @@ func (r *resource) GetAllPercentiles() info.Percentiles {
 	p.Fifty = r.samples.GetPercentile(0.5)
 	p.Ninety = r.samples.GetPercentile(0.9)
 	p.NinetyFive = r.samples.GetPercentile(0.95)
+	// len(samples) is equal to count stored in mean.
+	p.Count = r.mean.count
 	p.Present = true
 	return p
 }
diff --git a/summary/percentiles_test.go b/summary/percentiles_test.go
index 4dbe3665d3..b4cf6206a5 100644
--- a/summary/percentiles_test.go
+++ b/summary/percentiles_test.go
@@ -84,6 +84,8 @@ func TestAggregates(t *testing.T) {
 		Fifty:      1000,
 		Ninety:     1000,
 		NinetyFive: 1000,
+		// Since cpu is calculated between samples, we lose 1 sample.
+		Count: N - 2,
 	}
 	if usage.Cpu != cpuExpected {
 		t.Errorf("cpu stats are %+v. Expected %+v", usage.Cpu, cpuExpected)
@@ -95,6 +97,7 @@ func TestAggregates(t *testing.T) {
 		Fifty:      50 * 1024,
 		Ninety:     90 * 1024,
 		NinetyFive: 95 * 1024,
+		Count:      N - 1,
 	}
 	if usage.Memory != memExpected {
 		t.Errorf("memory stats are mean %+v. Expected %+v", usage.Memory, memExpected)
@@ -133,6 +136,8 @@ func TestSamplesCloseInTimeIgnored(t *testing.T) {
 		Fifty:      1000,
 		Ninety:     1000,
 		NinetyFive: 1000,
+		// Since cpu is calculated between samples, we lose 1 sample.
+		Count: N - 2,
 	}
 	if usage.Cpu != cpuExpected {
 		t.Errorf("cpu stats are %+v. Expected %+v", usage.Cpu, cpuExpected)
@@ -144,6 +149,7 @@ func TestSamplesCloseInTimeIgnored(t *testing.T) {
 		Fifty:      50 * 1024,
 		Ninety:     90 * 1024,
 		NinetyFive: 95 * 1024,
+		Count:      N - 1,
 	}
 	if usage.Memory != memExpected {
 		t.Errorf("memory stats are mean %+v. Expected %+v", usage.Memory, memExpected)
@@ -184,6 +190,8 @@ func TestDerivedStats(t *testing.T) {
 		Fifty:      50 * Nanosecond,
 		Ninety:     90 * Nanosecond,
 		NinetyFive: 95 * Nanosecond,
+		// GetDerivedPercentiles calculates directly from samples, hence we don't lose any samples.
+		Count: N - 1,
 	}
 	if usage.Cpu != cpuExpected {
 		t.Errorf("cpu stats are %+v. Expected %+v", usage.Cpu, cpuExpected)
@@ -195,6 +203,7 @@ func TestDerivedStats(t *testing.T) {
 		Fifty:      50 * 1024,
 		Ninety:     90 * 1024,
 		NinetyFive: 95 * 1024,
+		Count:      N - 1,
 	}
 	if usage.Memory != memExpected {
 		t.Errorf("memory stats are mean %+v. Expected %+v", usage.Memory, memExpected)