add pids, IO stat

.gitignore

@@ -0,0 +1,2 @@
+ctop
+.idea

cwidgets/compact/header.go

@@ -12,7 +12,7 @@ type CompactHeader struct {
 }
 
 func NewCompactHeader() *CompactHeader {
-	fields := []string{"", "NAME", "CID", "CPU", "MEM", "NET RX/TX"}
+	fields := []string{"", "NAME", "CID", "CPU", "MEM", "NET RX/TX", "IO Read/Write", "Pids"}
 	ch := &CompactHeader{}
 	ch.Height = 2
 	for _, f := range fields {
@@ -27,7 +27,7 @@ func (ch *CompactHeader) GetHeight() int {
 
 func (ch *CompactHeader) SetWidth(w int) {
 	x := ch.X
-	autoWidth := calcWidth(w, 5)
+	autoWidth := calcWidth(w, 7)
 	for n, col := range ch.pars {
 		// set status column to static width
 		if n == 0 {

cwidgets/compact/main.go

@@ -15,6 +15,8 @@ type Compact struct {
 	Cpu    *GaugeCol
 	Memory *GaugeCol
 	Net    *TextCol
+	IO     *TextCol
+	Pids   *TextCol
 	X, Y   int
 	Width  int
 	Height int
@@ -32,6 +34,8 @@ func NewCompact(id string) *Compact {
 		Cpu:    NewGaugeCol(),
 		Memory: NewGaugeCol(),
 		Net:    NewTextCol("-"),
+		IO:     NewTextCol("-"),
+		Pids:   NewTextCol("-"),
 		X:      1,
 		Height: 1,
 	}
@@ -59,13 +63,17 @@ func (row *Compact) SetMetrics(m metrics.Metrics) {
 	row.SetCPU(m.CPUUtil)
 	row.SetNet(m.NetRx, m.NetTx)
 	row.SetMem(m.MemUsage, m.MemLimit, m.MemPercent)
+	row.SetIO(m.IOBytesRead, m.IOBytesWrite)
+	row.SetPids(m.Pids)
 }
 
 // Set gauges, counters to default unread values
 func (row *Compact) Reset() {
 	row.Cpu.Reset()
 	row.Memory.Reset()
 	row.Net.Reset()
+	row.IO.Reset()
+	row.Pids.Reset()
 }
 
 func (row *Compact) GetHeight() int {
@@ -91,7 +99,7 @@ func (row *Compact) SetWidth(width int) {
 		return
 	}
 	x := row.X
-	autoWidth := calcWidth(width, 5)
+	autoWidth := calcWidth(width, 7)
 	for n, col := range row.all() {
 		// set status column to static width
 		if n == 0 {
@@ -116,7 +124,8 @@ func (row *Compact) Buffer() ui.Buffer {
 	buf.Merge(row.Cpu.Buffer())
 	buf.Merge(row.Memory.Buffer())
 	buf.Merge(row.Net.Buffer())
-
+	buf.Merge(row.IO.Buffer())
+	buf.Merge(row.Pids.Buffer())
 	return buf
 }
 
@@ -128,5 +137,7 @@ func (row *Compact) all() []ui.GridBufferer {
 		row.Cpu,
 		row.Memory,
 		row.Net,
+		row.IO,
+		row.Pids,
 	}
 }

cwidgets/compact/setters.go

@@ -13,6 +13,16 @@ func (row *Compact) SetNet(rx int64, tx int64) {
 	row.Net.Set(label)
 }
 
+func (row *Compact) SetIO(read int64, write int64) {
+	label := fmt.Sprintf("%s / %s", cwidgets.ByteFormat(read), cwidgets.ByteFormat(write))
+	row.IO.Set(label)
+}
+
+func (row *Compact) SetPids(val int) {
+	label := fmt.Sprintf("%s", strconv.Itoa(val))
+	row.Pids.Set(label)
+}
+
 func (row *Compact) SetCPU(val int) {
 	row.Cpu.BarColor = colorScale(val)
 	row.Cpu.Label = fmt.Sprintf("%s%%", strconv.Itoa(val))

cwidgets/expanded/io.go

@@ -0,0 +1,51 @@
+package expanded
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/bcicen/ctop/cwidgets"
+	ui "github.com/gizak/termui"
+)
+
+type IO struct {
+	*ui.Sparklines
+	readHist *DiffHist
+	writeHist *DiffHist
+}
+
+func NewIO() *IO {
+	io := &IO{ui.NewSparklines(), NewDiffHist(60), NewDiffHist(60)}
+	io.BorderLabel = "IO"
+	io.Height = 6
+	io.Width = colWidth[0]
+	io.X = 0
+	io.Y = 24
+
+	read := ui.NewSparkline()
+	read.Title = "read"
+	read.Height = 1
+	read.Data = io.readHist.Data
+	read.LineColor = ui.ColorGreen
+
+	write := ui.NewSparkline()
+	write.Title = "write"
+	write.Height = 1
+	write.Data = io.writeHist.Data
+	write.LineColor = ui.ColorYellow
+
+	io.Lines = []ui.Sparkline{read, write}
+	return io
+}
+
+func (w *IO) Update(read int64, write int64) {
+	var rate string
+
+	w.readHist.Append(int(read))
+	rate = strings.ToLower(cwidgets.ByteFormatInt(w.readHist.Val))
+	w.Lines[0].Title = fmt.Sprintf("read [%s/s]", rate)
+
+	w.writeHist.Append(int(write))
+	rate = strings.ToLower(cwidgets.ByteFormatInt(w.writeHist.Val))
+	w.Lines[1].Title = fmt.Sprintf("write [%s/s]", rate)
+}

cwidgets/expanded/main.go

@@ -17,6 +17,7 @@ type Expanded struct {
 	Net   *Net
 	Cpu   *Cpu
 	Mem   *Mem
+	IO    *IO
 	Width int
 }
 
@@ -29,6 +30,7 @@ func NewExpanded(id string) *Expanded {
 		Net:   NewNet(),
 		Cpu:   NewCpu(),
 		Mem:   NewMem(),
+		IO:    NewIO(),
 		Width: ui.TermWidth(),
 	}
 }
@@ -45,6 +47,7 @@ func (e *Expanded) SetMetrics(m metrics.Metrics) {
 	e.Cpu.Update(m.CPUUtil)
 	e.Net.Update(m.NetRx, m.NetTx)
 	e.Mem.Update(int(m.MemUsage), int(m.MemLimit))
+	e.IO.Update(m.IOBytesRead, m.IOBytesWrite)
 }
 
 func (e *Expanded) Align() {
@@ -74,6 +77,7 @@ func (e *Expanded) Buffer() ui.Buffer {
 	buf.Merge(e.Cpu.Buffer())
 	buf.Merge(e.Mem.Buffer())
 	buf.Merge(e.Net.Buffer())
+	buf.Merge(e.IO.Buffer())
 	return buf
 }
 
@@ -83,6 +87,7 @@ func (e *Expanded) all() []ui.GridBufferer {
 		e.Cpu,
 		e.Mem,
 		e.Net,
+		e.IO,
 	}
 }
 

metrics/docker.go

@@ -46,6 +46,7 @@ func (c *Docker) Start() {
 			c.ReadCPU(s)
 			c.ReadMem(s)
 			c.ReadNet(s)
+			c.ReadIO(s)
 			c.stream <- c.Metrics
 		}
 		log.Infof("collector stopped for container: %s", c.id)
@@ -79,6 +80,7 @@ func (c *Docker) ReadCPU(stats *api.Stats) {
 	c.CPUUtil = round((cpudiff / syscpudiff * 100) * ncpus)
 	c.lastCpu = total
 	c.lastSysCpu = system
+	c.Pids = int(stats.PidsStats.Current)
 }
 
 func (c *Docker) ReadMem(stats *api.Stats) {
@@ -95,3 +97,16 @@ func (c *Docker) ReadNet(stats *api.Stats) {
 	}
 	c.NetRx, c.NetTx = rx, tx
 }
+
+func (c *Docker) ReadIO(stats *api.Stats) {
+	var read, write int64
+	for _, blk := range stats.BlkioStats.IOServiceBytesRecursive {
+		if blk.Op == "Read" {
+			read = int64(blk.Value)
+		}
+		if blk.Op == "Write" {
+			write = int64(blk.Value)
+		}
+	}
+	c.IOBytesRead, c.IOBytesWrite = read, write
+}

metrics/main.go

@@ -9,21 +9,27 @@ import (
 var log = logging.Init()
 
 type Metrics struct {
-	CPUUtil    int
-	NetTx      int64
-	NetRx      int64
-	MemLimit   int64
-	MemPercent int
-	MemUsage   int64
+	CPUUtil      int
+	NetTx        int64
+	NetRx        int64
+	MemLimit     int64
+	MemPercent   int
+	MemUsage     int64
+	IOBytesRead  int64
+	IOBytesWrite int64
+	Pids         int
 }
 
 func NewMetrics() Metrics {
 	return Metrics{
-		CPUUtil:    -1,
-		NetTx:      -1,
-		NetRx:      -1,
-		MemUsage:   -1,
-		MemPercent: -1,
+		CPUUtil:           -1,
+		NetTx:             -1,
+		NetRx:             -1,
+		MemUsage:          -1,
+		MemPercent:        -1,
+		IOBytesRead:       -1,
+		IOBytesWrite:      -1,
+		Pids:              -1,
 	}
 }
 

sort.go

@@ -53,6 +53,15 @@ var Sorters = map[string]sortMethod{
 		}
 		return sum1 > sum2
 	},
+	"io": func(c1, c2 *Container) bool {
+		sum1 := sumIO(c1)
+		sum2 := sumIO(c2)
+		// Use secondary sort method if equal values
+		if sum1 == sum2 {
+			return nameSorter(c1, c2)
+		}
+		return sum1 > sum2
+	},
 	"state": func(c1, c2 *Container) bool {
 		// Use secondary sort method if equal values
 		c1state := c1.GetMeta("state")
@@ -101,3 +110,5 @@ func (a Containers) Filter() {
 }
 
 func sumNet(c *Container) int64 { return c.NetRx + c.NetTx }
+
+func sumIO(c *Container) int64 { return c.IOBytesRead + c.IOBytesWrite }