Add 'MemUsageBytes' format option

Although storage is more human-readable when expressed in SI units,
IEC/JEDEC (Bytes) units are more pertinent for memory-related values
(and match the format of the --memory* command-line options).

(To prevent possible compatibility issues, the default SI display is
left unchanged)

See https://github.com/containers/podman/issues/8945

Signed-off-by: Stuart Shelton <stuart@shelton.me>

6 files changed, 76 insertions, 51 deletions

diff --git a/cmd/podman/containers/stats.go b/cmd/podman/containers/stats.go
index ca5c0fdb8..1a436aaef 100644
--- a/cmd/podman/containers/stats.go
+++ b/cmd/podman/containers/stats.go
@@ -147,13 +147,14 @@ func stats(cmd *cobra.Command, args []string) error {
 
 func outputStats(reports []define.ContainerStats) error {
 	headers := report.Headers(define.ContainerStats{}, map[string]string{
-		"ID":       "ID",
-		"CPUPerc":  "CPU %",
-		"MemUsage": "MEM USAGE / LIMIT",
-		"MemPerc":  "MEM %",
-		"NetIO":    "NET IO",
-		"BlockIO":  "BLOCK IO",
-		"PIDS":     "PIDS",
+		"ID":            "ID",
+		"CPUPerc":       "CPU %",
+		"MemUsage":      "MEM USAGE / LIMIT",
+		"MemUsageBytes": "MEM USAGE / LIMIT",
+		"MemPerc":       "MEM %",
+		"NetIO":         "NET IO",
+		"BlockIO":       "BLOCK IO",
+		"PIDS":          "PIDS",
 	})
 	if !statsOptions.NoReset {
 		tm.Clear()
@@ -222,10 +223,15 @@ func (s *containerStats) PIDS() string {
 	}
 	return fmt.Sprintf("%d", s.PIDs)
 }
+
 func (s *containerStats) MemUsage() string {
 	return combineHumanValues(s.ContainerStats.MemUsage, s.ContainerStats.MemLimit)
 }
 
+func (s *containerStats) MemUsageBytes() string {
+	return combineBytesValues(s.ContainerStats.MemUsage, s.ContainerStats.MemLimit)
+}
+
 func floatToPercentString(f float64) string {
 	strippedFloat, err := utils.RemoveScientificNotationFromFloat(f)
 	if err != nil || strippedFloat == 0 {
@@ -242,6 +248,13 @@ func combineHumanValues(a, b uint64) string {
 	return fmt.Sprintf("%s / %s", units.HumanSize(float64(a)), units.HumanSize(float64(b)))
 }
 
+func combineBytesValues(a, b uint64) string {
+	if a == 0 && b == 0 {
+		return "-- / --"
+	}
+	return fmt.Sprintf("%s / %s", units.BytesSize(float64(a)), units.BytesSize(float64(b)))
+}
+
 func outputJSON(stats []containerStats) error {
 	type jstat struct {
 		Id         string `json:"id"` // nolint
diff --git a/cmd/podman/pods/stats.go b/cmd/podman/pods/stats.go
index 79e7cd8ed..5f79fa016 100644
--- a/cmd/podman/pods/stats.go
+++ b/cmd/podman/pods/stats.go
@@ -75,11 +75,12 @@ func stats(cmd *cobra.Command, args []string) error {
 	doJSON := report.IsJSON(row)
 
 	headers := report.Headers(entities.PodStatsReport{}, map[string]string{
-		"CPU":      "CPU %",
-		"MemUsage": "MEM USAGE/ LIMIT",
-		"MEM":      "MEM %",
-		"NET IO":   "NET IO",
-		"BlockIO":  "BLOCK IO",
+		"CPU":           "CPU %",
+		"MemUsage":      "MEM USAGE/ LIMIT",
+		"MemUsageBytes": "MEM USAGE/ LIMIT",
+		"MEM":           "MEM %",
+		"NET IO":        "NET IO",
+		"BlockIO":       "BLOCK IO",
 	})
 
 	for ; ; time.Sleep(time.Second) {
diff --git a/docs/source/markdown/podman-pod-stats.1.md b/docs/source/markdown/podman-pod-stats.1.md
index b1b23cd06..4ef15fc20 100644
--- a/docs/source/markdown/podman-pod-stats.1.md
+++ b/docs/source/markdown/podman-pod-stats.1.md
@@ -35,17 +35,18 @@ Pretty-print container statistics to JSON or using a Go template
 
 Valid placeholders for the Go template are listed below:
 
-| **Placeholder** | **Description**   |
-| --------------- | ---------------   |
-| .Pod            | Pod ID      |
-| .CID            | Container ID      |
-| .Name           | Container Name    |
-| .CPU            | CPU percentage    |
-| .MemUsage       | Memory usage      |
-| .Mem            | Memory percentage |
-| .NetIO          | Network IO        |
-| .BlockIO        | Block IO          |
-| .PIDS           | Number of PIDs    |
+| **Placeholder** | **Description**    |
+| --------------- | ------------------ |
+| .Pod            | Pod ID             |
+| .CID            | Container ID       |
+| .Name           | Container Name     |
+| .CPU            | CPU percentage     |
+| .MemUsage       | Memory usage       |
+| .MemUsageBytes  | Memory usage (IEC) |
+| .Mem            | Memory percentage  |
+| .NetIO          | Network IO         |
+| .BlockIO        | Block IO           |
+| .PIDS           | Number of PIDs     |
 
 When using a GO template, you may precede the format with `table` to print headers.
 ## EXAMPLE
diff --git a/docs/source/markdown/podman-stats.1.md b/docs/source/markdown/podman-stats.1.md
index d5de8caf2..722027aae 100644
--- a/docs/source/markdown/podman-stats.1.md
+++ b/docs/source/markdown/podman-stats.1.md
@@ -45,16 +45,17 @@ Pretty-print container statistics to JSON or using a Go template
 
 Valid placeholders for the Go template are listed below:
 
-| **Placeholder** | **Description**   |
-| --------------- | ---------------   |
-| .ID             | Container ID      |
-| .Name           | Container Name    |
-| .CPUPerc        | CPU percentage    |
-| .MemUsage       | Memory usage      |
-| .MemPerc        | Memory percentage |
-| .NetIO          | Network IO        |
-| .BlockIO        | Block IO          |
-| .PIDS           | Number of PIDs    |
+| **Placeholder** | **Description**    |
+| --------------- | ------------------ |
+| .ID             | Container ID       |
+| .Name           | Container Name     |
+| .CPUPerc        | CPU percentage     |
+| .MemUsage       | Memory usage       |
+| .MemUsageBytes  | Memory usage (IEC) |
+| .MemPerc        | Memory percentage  |
+| .NetIO          | Network IO         |
+| .BlockIO        | Block IO           |
+| .PIDS           | Number of PIDs     |
 
 When using a GO template, you may precede the format with `table` to print headers.
 
diff --git a/pkg/domain/entities/pods.go b/pkg/domain/entities/pods.go
index edb0af15a..32900d536 100644
--- a/pkg/domain/entities/pods.go
+++ b/pkg/domain/entities/pods.go
@@ -212,15 +212,16 @@ type PodStatsOptions struct {
 
 // PodStatsReport includes pod-resource statistics data.
 type PodStatsReport struct {
-	CPU      string
-	MemUsage string
-	Mem      string
-	NetIO    string
-	BlockIO  string
-	PIDS     string
-	Pod      string
-	CID      string
-	Name     string
+	CPU           string
+	MemUsage      string
+	MemUsageBytes string
+	Mem           string
+	NetIO         string
+	BlockIO       string
+	PIDS          string
+	Pod           string
+	CID           string
+	Name          string
 }
 
 // ValidatePodStatsOptions validates the specified slice and options. Allows
diff --git a/pkg/domain/infra/abi/pods_stats.go b/pkg/domain/infra/abi/pods_stats.go
index 16c10710a..29bcbe087 100644
--- a/pkg/domain/infra/abi/pods_stats.go
+++ b/pkg/domain/infra/abi/pods_stats.go
@@ -44,15 +44,16 @@ func (ic *ContainerEngine) podsToStatsReport(pods []*libpod.Pod) ([]*entities.Po
 		podID := pods[i].ID()[:12]
 		for j := range podStats {
 			r := entities.PodStatsReport{
-				CPU:      floatToPercentString(podStats[j].CPU),
-				MemUsage: combineHumanValues(podStats[j].MemUsage, podStats[j].MemLimit),
-				Mem:      floatToPercentString(podStats[j].MemPerc),
-				NetIO:    combineHumanValues(podStats[j].NetInput, podStats[j].NetOutput),
-				BlockIO:  combineHumanValues(podStats[j].BlockInput, podStats[j].BlockOutput),
-				PIDS:     pidsToString(podStats[j].PIDs),
-				CID:      podStats[j].ContainerID[:12],
-				Name:     podStats[j].Name,
-				Pod:      podID,
+				CPU:           floatToPercentString(podStats[j].CPU),
+				MemUsage:      combineHumanValues(podStats[j].MemUsage, podStats[j].MemLimit),
+				MemUsageBytes: combineBytesValues(podStats[j].MemUsage, podStats[j].MemLimit),
+				Mem:           floatToPercentString(podStats[j].MemPerc),
+				NetIO:         combineHumanValues(podStats[j].NetInput, podStats[j].NetOutput),
+				BlockIO:       combineHumanValues(podStats[j].BlockInput, podStats[j].BlockOutput),
+				PIDS:          pidsToString(podStats[j].PIDs),
+				CID:           podStats[j].ContainerID[:12],
+				Name:          podStats[j].Name,
+				Pod:           podID,
 			}
 			reports = append(reports, &r)
 		}
@@ -68,6 +69,13 @@ func combineHumanValues(a, b uint64) string {
 	return fmt.Sprintf("%s / %s", units.HumanSize(float64(a)), units.HumanSize(float64(b)))
 }
 
+func combineBytesValues(a, b uint64) string {
+	if a == 0 && b == 0 {
+		return "-- / --"
+	}
+	return fmt.Sprintf("%s / %s", units.BytesSize(float64(a)), units.BytesSize(float64(b)))
+}
+
 func floatToPercentString(f float64) string {
 	strippedFloat, err := utils.RemoveScientificNotationFromFloat(f)
 	if err != nil || strippedFloat == 0 {