kubele: add RSS memroy to the summary API

pkg/kubelet/api/v1alpha1/stats/types.go

@@ -133,6 +133,9 @@ type MemoryStats struct {
 	// The amount of working set memory. This includes recently accessed memory,
 	// dirty memory, and kernel memory. UsageBytes is <= TotalBytes.
 	WorkingSetBytes *uint64 `json:"workingSetBytes,omitempty"`
+	// The amount of anonymous and swap cache memory (includes transparent
+	// hugepages).
+	RSSBytes *uint64 `json:"rssBytes,omitempty"`
 	// Cumulative number of minor page faults.
 	PageFaults *uint64 `json:"pageFaults,omitempty"`
 	// Cumulative number of major page faults.

pkg/kubelet/server/stats/summary.go

@@ -280,6 +280,7 @@ func (sb *summaryBuilder) containerInfoV2ToStats(
 			Time:            unversioned.NewTime(cstat.Timestamp),
 			UsageBytes:      &cstat.Memory.Usage,
 			WorkingSetBytes: &cstat.Memory.WorkingSet,
+			RSSBytes:        &cstat.Memory.RSS,
 			PageFaults:      &pageFaults,
 			MajorPageFaults: &majorPageFaults,
 		}

pkg/kubelet/server/stats/summary_test.go

@@ -39,6 +39,7 @@ const (
 	offsetMemPageFaults
 	offsetMemMajorPageFaults
 	offsetMemUsageBytes
+	offsetMemRSSBytes
 	offsetMemWorkingSetBytes
 	offsetNetRxBytes
 	offsetNetRxErrors
@@ -258,6 +259,7 @@ func summaryTestContainerInfo(seed int, podName string, podNamespace string, con
 		Memory: &v1.MemoryStats{
 			Usage:      uint64(seed + offsetMemUsageBytes),
 			WorkingSet: uint64(seed + offsetMemWorkingSetBytes),
+			RSS:        uint64(seed + offsetMemRSSBytes),
 			ContainerData: v1.MemoryStatsMemoryData{
 				Pgfault:    uint64(seed + offsetMemPageFaults),
 				Pgmajfault: uint64(seed + offsetMemMajorPageFaults),
@@ -310,6 +312,7 @@ func checkMemoryStats(t *testing.T, label string, seed int, stats *kubestats.Mem
 	assert.EqualValues(t, testTime(timestamp, seed).Unix(), stats.Time.Time.Unix(), label+".Mem.Time")
 	assert.EqualValues(t, seed+offsetMemUsageBytes, *stats.UsageBytes, label+".Mem.UsageBytes")
 	assert.EqualValues(t, seed+offsetMemWorkingSetBytes, *stats.WorkingSetBytes, label+".Mem.WorkingSetBytes")
+	assert.EqualValues(t, seed+offsetMemRSSBytes, *stats.RSSBytes, label+".Mem.RSSBytes")
 	assert.EqualValues(t, seed+offsetMemPageFaults, *stats.PageFaults, label+".Mem.PageFaults")
 	assert.EqualValues(t, seed+offsetMemMajorPageFaults, *stats.MajorPageFaults, label+".Mem.MajorPageFaults")
 }