diff --git a/command/command_windows.go b/command/command_windows.go
index 30730171a..0748d9f8e 100644
--- a/command/command_windows.go
+++ b/command/command_windows.go
@@ -27,7 +27,7 @@ func metricsGenerators(conf *config.Config) []metrics.Generator {
 	var err error
 
 	generators := []metrics.Generator{}
-	if g, err = metricsWindows.NewLoadavg5Generator(); err == nil {
+	if g, err = metricsWindows.NewProcessorQueueLengthGenerator(); err == nil {
 		generators = append(generators, g)
 	}
 	if g, err = metricsWindows.NewCPUUsageGenerator(); err == nil {
diff --git a/metrics/windows/cpuusage.go b/metrics/windows/cpuusage.go
index 213ca78c5..1d5216231 100644
--- a/metrics/windows/cpuusage.go
+++ b/metrics/windows/cpuusage.go
@@ -3,32 +3,80 @@
 package windows
 
 import (
+	"syscall"
+	"unsafe"
+
 	"github.com/mackerelio/mackerel-agent/logging"
 	"github.com/mackerelio/mackerel-agent/metrics"
-	"github.com/mackerelio/mackerel-agent/util"
+	"github.com/mackerelio/mackerel-agent/util/windows"
 )
 
-// CPUUsageGenerator XXX
+// CPUUsageGenerator is struct of windows api
 type CPUUsageGenerator struct {
+	query    syscall.Handle
+	counters []*windows.CounterInfo
 }
 
-var cpuUsageLogger = logging.GetLogger("metrics.cpuusage")
+var cpuUsageLogger = logging.GetLogger("cpu.user.percentage")
 
-// NewCPUUsageGenerator XXX
+// NewCPUUsageGenerator is set up windows api
 func NewCPUUsageGenerator() (*CPUUsageGenerator, error) {
-	return &CPUUsageGenerator{}, nil
+	g := &CPUUsageGenerator{0, nil}
+
+	var err error
+	g.query, err = windows.CreateQuery()
+	if err != nil {
+		cpuUsageLogger.Criticalf(err.Error())
+		return nil, err
+	}
+	var counter *windows.CounterInfo
+
+	counter, err = windows.CreateCounter(g.query, "cpu.user.percentage", `\Processor(_Total)\% User Time`)
+	if err != nil {
+		cpuUsageLogger.Criticalf(err.Error())
+		return nil, err
+	}
+	g.counters = append(g.counters, counter)
+
+	counter, err = windows.CreateCounter(g.query, "cpu.system.percentage", `\Processor(_Total)\% Privileged Time`)
+	if err != nil {
+		cpuUsageLogger.Criticalf(err.Error())
+		return nil, err
+	}
+	g.counters = append(g.counters, counter)
+
+	counter, err = windows.CreateCounter(g.query, "cpu.idle.percentage", `\Processor(_Total)\% Idle Time`)
+	if err != nil {
+		cpuUsageLogger.Criticalf(err.Error())
+		return nil, err
+	}
+	g.counters = append(g.counters, counter)
+	return g, nil
 }
 
 // Generate XXX
 func (g *CPUUsageGenerator) Generate() (metrics.Values, error) {
-	cpuusage := make(map[string]float64)
 
-	cpuusageValue, err := util.GetWmicToFloat("cpu", "loadpercentage")
-	if err != nil {
-		cpuusageValue = 0
+	r, _, err := windows.PdhCollectQueryData.Call(uintptr(g.query))
+	if r != 0 && err != nil {
+		if r == windows.PDH_NO_DATA {
+			cpuUsageLogger.Infof("this metric has not data. ")
+			return nil, err
+		}
+		return nil, err
 	}
-	cpuusage["cpu.user.percentage"] = cpuusageValue
-	cpuusage["cpu.idle.percentage"] = 100 - cpuusageValue
-	cpuUsageLogger.Debugf("cpuusage : %s", cpuusage)
-	return metrics.Values(cpuusage), nil
+
+	results := make(map[string]float64)
+	for _, v := range g.counters {
+		var fmtValue windows.PDH_FMT_COUNTERVALUE_DOUBLE
+		r, _, err := windows.PdhGetFormattedCounterValue.Call(uintptr(v.Counter), windows.PDH_FMT_DOUBLE, uintptr(0), uintptr(unsafe.Pointer(&fmtValue)))
+		if r != 0 && r != windows.PDH_INVALID_DATA {
+			return nil, err
+		}
+		results[v.PostName] = fmtValue.DoubleValue
+	}
+
+	cpuUsageLogger.Debugf("cpuusage: %q", results)
+
+	return results, nil
 }
diff --git a/metrics/windows/cpuusage_test.go b/metrics/windows/cpuusage_test.go
index fa59b8e37..bac1e9c0e 100644
--- a/metrics/windows/cpuusage_test.go
+++ b/metrics/windows/cpuusage_test.go
@@ -8,11 +8,18 @@ import "testing"
 var cpuUsageMetricNames = []string{
 	"cpu.user.percentage",
 	"cpu.idle.percentage",
+	"cpu.system.percentage",
 }
 
 func TestCPUUsageGenerate(t *testing.T) {
-	g := &CPUUsageGenerator{}
-	values, _ := g.Generate()
+	g, err := NewCPUUsageGenerator()
+	if err != nil {
+		t.Errorf("should not raise error: %v", err)
+	}
+	values, err := g.Generate()
+	if err != nil {
+		t.Errorf("should not raise error: %v", err)
+	}
 
 	for _, metricName := range cpuUsageMetricNames {
 		value, ok := values[metricName]
diff --git a/metrics/windows/memory.go b/metrics/windows/memory.go
index d399b93a5..af8561dbc 100644
--- a/metrics/windows/memory.go
+++ b/metrics/windows/memory.go
@@ -36,8 +36,8 @@ func (g *MemoryGenerator) Generate() (metrics.Values, error) {
 	ret["memory.free"] = free
 	ret["memory.total"] = total
 	ret["memory.used"] = total - free
-	ret["memory.swap_total"] = float64(memoryStatusEx.TotalVirtual) / 1024
-	ret["memory.swap_free"] = float64(memoryStatusEx.AvailVirtual) / 1024
+	ret["memory.pagefile_total"] = float64(memoryStatusEx.TotalPageFile) / 1024
+	ret["memory.pagefile_free"] = float64(memoryStatusEx.AvailPageFile) / 1024
 
 	memoryLogger.Debugf("memory : %s", ret)
 	return metrics.Values(ret), nil
diff --git a/metrics/windows/memory_test.go b/metrics/windows/memory_test.go
index 06776781c..23c77961e 100644
--- a/metrics/windows/memory_test.go
+++ b/metrics/windows/memory_test.go
@@ -16,8 +16,8 @@ func TestMemoryGenerator(t *testing.T) {
 	for _, name := range []string{
 		"total",
 		"free",
-		"swap_total",
-		"swap_free",
+		"pagefile_total",
+		"pagefile_free",
 		"used",
 	} {
 		if _, ok := values["memory."+name]; !ok {
diff --git a/metrics/windows/loadavg5.go b/metrics/windows/processor_queue_length.go
similarity index 57%
rename from metrics/windows/loadavg5.go
rename to metrics/windows/processor_queue_length.go
index 30ae99d97..052be9398 100644
--- a/metrics/windows/loadavg5.go
+++ b/metrics/windows/processor_queue_length.go
@@ -11,28 +11,28 @@ import (
 	"github.com/mackerelio/mackerel-agent/util/windows"
 )
 
-// Loadavg5Generator XXX
-type Loadavg5Generator struct {
+// ProcessorQueueLengthGenerator is struct of windows api
+type ProcessorQueueLengthGenerator struct {
 	query    syscall.Handle
 	counters []*windows.CounterInfo
 }
 
-var loadavg5Logger = logging.GetLogger("metrics.loadavg5")
+var processorQueueLengthLogger = logging.GetLogger("metrics.processor_queue_length")
 
-// NewLoadavg5Generator XXX
-func NewLoadavg5Generator() (*Loadavg5Generator, error) {
-	g := &Loadavg5Generator{0, nil}
+// NewProcessorQueueLengthGenerator is set up windows api
+func NewProcessorQueueLengthGenerator() (*ProcessorQueueLengthGenerator, error) {
+	g := &ProcessorQueueLengthGenerator{0, nil}
 
 	var err error
 	g.query, err = windows.CreateQuery()
 	if err != nil {
-		loadavg5Logger.Criticalf(err.Error())
+		processorQueueLengthLogger.Criticalf(err.Error())
 		return nil, err
 	}
 
-	counter, err := windows.CreateCounter(g.query, "loadavg5", `\System\Processor Queue Length`)
+	counter, err := windows.CreateCounter(g.query, "processor_queue_length", `\System\Processor Queue Length`)
 	if err != nil {
-		loadavg5Logger.Criticalf(err.Error())
+		processorQueueLengthLogger.Criticalf(err.Error())
 		return nil, err
 	}
 	g.counters = append(g.counters, counter)
@@ -40,12 +40,12 @@ func NewLoadavg5Generator() (*Loadavg5Generator, error) {
 }
 
 // Generate XXX
-func (g *Loadavg5Generator) Generate() (metrics.Values, error) {
+func (g *ProcessorQueueLengthGenerator) Generate() (metrics.Values, error) {
 
 	r, _, err := windows.PdhCollectQueryData.Call(uintptr(g.query))
 	if r != 0 && err != nil {
 		if r == windows.PDH_NO_DATA {
-			loadavg5Logger.Infof("this metric has not data. ")
+			processorQueueLengthLogger.Infof("this metric has not data. ")
 			return nil, err
 		}
 		return nil, err
@@ -61,7 +61,7 @@ func (g *Loadavg5Generator) Generate() (metrics.Values, error) {
 		results[v.PostName] = fmtValue.DoubleValue
 	}
 
-	loadavg5Logger.Debugf("loadavg5: %q", results)
+	processorQueueLengthLogger.Debugf("processor_queue_length: %q", results)
 
 	return results, nil
 }
diff --git a/metrics/windows/loadavg5_test.go b/metrics/windows/processor_queue_length_test.go
similarity index 59%
rename from metrics/windows/loadavg5_test.go
rename to metrics/windows/processor_queue_length_test.go
index 63efab2ef..6e019d243 100644
--- a/metrics/windows/loadavg5_test.go
+++ b/metrics/windows/processor_queue_length_test.go
@@ -6,8 +6,8 @@ import (
 	"testing"
 )
 
-func TestLoadavg5Generator(t *testing.T) {
-	g, _ := NewLoadavg5Generator()
+func TestProcessorQueueLengthGenerator(t *testing.T) {
+	g, _ := NewProcessorQueueLengthGenerator()
 
 	_, err := g.Generate()
 	if err != nil {