fix merge conflicts, update import paths

CHANGELOG.md

@@ -1,4 +1,10 @@
-## v0.1.5 [unreleased]
+## v0.1.6 [unreleased]
+
+### Features
+
+### Bugfixes
+
+## v0.1.5 [2015-08-13]
 
 ### Features
 - [#54](https://github.com/influxdb/telegraf/pull/54): MongoDB plugin. Thanks @jipperinbham!
@@ -15,6 +21,8 @@
 - [#103](https://github.com/influxdb/telegraf/pull/103): Filter by metric tags. Thanks @srfraser!
 - [#106](https://github.com/influxdb/telegraf/pull/106): Options to filter plugins on startup. Thanks @zepouet!
 - [#107](https://github.com/influxdb/telegraf/pull/107): Multiple outputs beyong influxdb. Thanks @jipperinbham!
+- [#108](https://github.com/influxdb/telegraf/issues/108): Support setting per-CPU and total-CPU gathering.
+- [#111](https://github.com/influxdb/telegraf/pull/111): Report CPU Usage in cpu plugin. Thanks @jpalay!
 
 ### Bugfixes
 - [#85](https://github.com/influxdb/telegraf/pull/85): Fix GetLocalHost testutil function for mac users

README.md

@@ -18,9 +18,14 @@ writing new plugins.
 
 ### Linux packages for Debian/Ubuntu and RHEL/CentOS:
 
+NOTE: version 0.1.5 has introduced some breaking changes! A 0.1.5 telegraf
+agent is NOT backwards-compatible with a config file from 0.1.4 and below.
+That being said, the difference is not huge, see below for an example on
+how to setup the new config file.
+
 ```
-http://get.influxdb.org/telegraf/telegraf_0.1.4_amd64.deb
+http://get.influxdb.org/telegraf/telegraf_0.1.5_amd64.deb
-http://get.influxdb.org/telegraf/telegraf-0.1.4-1.x86_64.rpm
+http://get.influxdb.org/telegraf/telegraf-0.1.5-1.x86_64.rpm
 ```
 
 ### OSX via Homebrew:
@@ -35,21 +40,9 @@ brew install telegraf
 * Run `telegraf -sample-config > telegraf.toml` to create an initial configuration
 * Edit the configuration to match your needs
 * Run `telegraf -config telegraf.toml -test` to output one full measurement sample to STDOUT
-* Run `telegraf -config telegraf.toml` to gather and send metrics to InfluxDB
+* Run `telegraf -config telegraf.toml` to gather and send metrics to configured outputs.
-* Run `telegraf -config telegraf.toml -filter system:swap` to enable only two plugins described into config file
+* Run `telegraf -config telegraf.toml -filter system:swap`
-
+to enable only the system & swap plugins defined in the config.
-### Telegraf Usage 
-
-```telegraf --help```
-
-*  -config="": configuration file to load
-*  -debug=false: show metrics as they're generated to stdout
-*  -filter="": filter the plugins to enable, separator is :
-*  -httptest.serve="": if non-empty, httptest.NewServer serves on this address and blocks
-*  -pidfile="": file to write our pid to
-*  -sample-config=false: print out full sample configuration
-*  -test=false: gather metrics, print them out, and exit
-*  -version=false: display the version
 
 ## Telegraf Options
 
@@ -66,6 +59,62 @@ unit parser, ie "10s" for 10 seconds or "5m" for 5 minutes.
 * **debug**: Set to true to gather and send metrics to STDOUT as well as
 InfluxDB.
 
+## Plugin Options
+
+There are 5 configuration options that are configurable per plugin:
+
+* **pass**: An array of strings that is used to filter metrics generated by the
+current plugin. Each string in the array is tested as a prefix against metric names
+and if it matches, the metric is emitted.
+* **drop**: The inverse of pass, if a metric name matches, it is not emitted.
+* **tagpass**: tag names and arrays of strings that are used to filter metrics by
+the current plugin. Each string in the array is tested as an exact match against
+the tag name, and if it matches the metric is emitted.
+* **tagdrop**: The inverse of tagpass. If a tag matches, the metric is not emitted.
+This is tested on metrics that have passed the tagpass test.
+* **interval**: How often to gather this metric. Normal plugins use a single
+global interval, but if one particular plugin should be run less or more often,
+you can configure that here.
+
+### Plugin Configuration Examples
+
+This is a full working config that will output CPU data to an InfluxDB instance
+at 192.168.59.103:8086, tagging measurements with dc="Denver-1". It will output
+measurements at a 10s interval and will collect totalcpu & percpu data.
+```
+[outputs]
+[outputs.influxdb]
+url = "http://192.168.59.103:8086" # required.
+database = "telegraf" # required.
+
+[tags]
+dc = "denver-1"
+
+[agent]
+interval = "10s"
+
+# PLUGINS
+[cpu]
+percpu = true
+totalcpu = true
+```
+
+Below is how to configure `tagpass` parameters (added in 0.1.5)
+
+```
+# Don't collect CPU data for cpu6 & cpu7
+[cpu.tagdrop]
+cpu = [ "cpu6", "cpu7" ]
+
+[disk]
+[disk.tagpass]
+# tagpass conditions are OR, not AND.
+# If the (filesystem is ext4 or xfs) OR (the path is /opt or /home)
+# then the metric passes
+fstype = [ "ext4", "xfs" ]
+path = [ "/opt", "/home" ]
+```
+
 ## Supported Plugins
 
 Telegraf currently has support for collecting metrics from:
@@ -87,51 +136,6 @@ Telegraf currently has support for collecting metrics from:
 We'll be adding support for many more over the coming months. Read on if you
 want to add support for another service or third-party API.
 
-## Plugin Options
-
-There are 3 configuration options that are configurable per plugin:
-
-* **pass**: An array of strings that is used to filter metrics generated by the
-current plugin. Each string in the array is tested as a prefix against metric names
-and if it matches, the metric is emitted.
-* **drop**: The inverse of pass, if a metric name matches, it is not emitted.
-* **tagpass**: tag names and arrays of strings that are used to filter metrics by
-the current plugin. Each string in the array is tested as an exact match against
-the tag name, and if it matches the metric is emitted.
-* **tagdrop**: The inverse of tagpass. If a tag matches, the metric is not emitted.
-This is tested on metrics that have passed the tagpass test.
-* **interval**: How often to gather this metric. Normal plugins use a single
-global interval, but if one particular plugin should be run less or more often,
-you can configure that here.
-
-### Plugin Configuration Examples
-
-```
-# Read metrics about disk usage by mount point
-[disk]
-interval = "1m" # Run at a 1 minute interval instead of the default
-
-[disk.tagpass]
-# These tag conditions are OR, not AND.
-# If the (filesystem is ext4 or xfs) or (the path is /opt or /home) then the metric passes
-fstype = [ "ext4", "xfs" ]
-path = [ "/opt", "/home" ]
-
-[postgresql]
-
-[postgresql.tagdrop]
-# Don't report stats about the database name 'testdatabase'
-db = [ "testdatabase" ]
-
-```
-
-```
-[disk]
-# Don't report stats about the following filesystem types
-[disk.tagdrop]
-fstype = [ "nfs", "tmpfs", "ecryptfs" ]
-```
-
 ## Plugins
 
 This section is for developers that want to create new collection plugins.

circle.yml

@@ -13,11 +13,11 @@ test:
     # install binaries
     - go install ./...
     # Go fmt should pass all files
-    - "[ `git ls-files | grep '.go$' | xargs gofmt -l 2>&1 | wc -l` -eq 0 ]"
+    - "[ `git ls-files | grep '.go$' | xargs gofmt -l | tee /tmp/foo | wc -l` -eq 0 ] || (cat /tmp/foo; exit 1)"
     - go vet ./...
-    - golint .
+    - "[ `golint . | tee /tmp/foo | wc -l` == 0 ] || (cat /tmp/foo; exit 1)"
-    - golint testutil/...
+    - "[ `golint testutil/... | tee /tmp/foo | wc -l` == 0 ] || (cat /tmp/foo; exit 1)"
-    - golint cmd/...
+    - "[ `golint cmd/... | tee /tmp/foo | wc -l` == 0 ] || (cat /tmp/foo; exit 1)"
   override:
     - make test-short
   post:

cmd/telegraf/telegraf.go

@@ -8,9 +8,9 @@ import (
 	"os/signal"
 	"strings"
 
+	"github.com/influxdb/telegraf"
+	_ "github.com/influxdb/telegraf/outputs/all"
 	_ "github.com/influxdb/telegraf/plugins/all"
-	"github.com/jipperinbham/telegraf"
-	_ "github.com/jipperinbham/telegraf/outputs/all"
 )
 
 var fDebug = flag.Bool("debug", false, "show metrics as they're generated to stdout")
@@ -22,7 +22,7 @@ var fPidfile = flag.String("pidfile", "", "file to write our pid to")
 var fPLuginsFilter = flag.String("filter", "", "filter the plugins to enable, separator is :")
 
 // Telegraf version
-var Version = "0.1.5-dev"
+var Version = "0.1.6-dev"
 
 func main() {
 	flag.Parse()
@@ -48,7 +48,9 @@ func main() {
 			log.Fatal(err)
 		}
 	} else {
-		config = telegraf.DefaultConfig()
+		fmt.Println("Usage: Telegraf")
+		flag.PrintDefaults()
+		return
 	}
 
 	ag, err := telegraf.NewAgent(config)
@@ -65,7 +67,7 @@ func main() {
 		log.Fatal(err)
 	}
 	if len(outputs) == 0 {
-		log.Printf("Error: no outputs found, did you provide a config file?")
+		log.Printf("Error: no outputs found, did you provide a valid config file?")
 		os.Exit(1)
 	}
 
@@ -74,7 +76,7 @@ func main() {
 		log.Fatal(err)
 	}
 	if len(plugins) == 0 {
-		log.Printf("Error: no plugins found, did you provide a config file?")
+		log.Printf("Error: no plugins found, did you provide a valid config file?")
 		os.Exit(1)
 	}
 
@@ -116,7 +118,7 @@ func main() {
 		log.Printf("Agent Config: Interval:%s, Debug:%#v, Hostname:%#v\n",
 			ag.Interval, ag.Debug, ag.Hostname)
 	}
-	log.Printf("Tags enabled: %v", config.ListTags())
+	log.Printf("Tags enabled: %s", config.ListTags())
 
 	if *fPidfile != "" {
 		f, err := os.Create(*fPidfile)

config.go

@@ -51,7 +51,7 @@ func (c *Config) Outputs() map[string]*ast.Table {
 	return c.outputs
 }
 
-// The name of a tag, and the values on which to filter
+// TagFilter is the name of a tag, and the values on which to filter
 type TagFilter struct {
 	Name   string
 	Filter []string
@@ -253,11 +253,6 @@ func declared(endpoints map[string]*ast.Table) []string {
 	return names
 }
 
-// DefaultConfig returns an empty default configuration
-func DefaultConfig() *Config {
-	return &Config{}
-}
-
 var errInvalidConfig = errors.New("invalid configuration")
 
 // LoadConfig loads the given config file and returns a *Config pointer

outputs/all/all.go

@@ -1,6 +1,6 @@
 package all
 
 import (
+	_ "github.com/influxdb/telegraf/outputs/datadog"
 	_ "github.com/influxdb/telegraf/outputs/influxdb"
-	_ "github.com/jipperinbham/telegraf/outputs/datadog"
 )

package.sh

@@ -224,7 +224,7 @@ EOF
 
 if [ $# -ne 1 ]; then
     usage 1
-elif [ $1 == "-h" ]; then
+elif [ "$1" == "-h" ]; then
     usage 0
 else
     VERSION=$1
@@ -232,11 +232,11 @@ fi
 
 echo -e "\nStarting package process...\n"
 
-if [ $CIRCLE_BRANCH == "" ]; then
+if [ "$CIRCLE_BRANCH" == "" ]; then
     check_gvm
 fi
 check_gopath
-if [ $CIRCLE_BRANCH == "" ]; then
+if [ "$CIRCLE_BRANCH" == "" ]; then
     check_clean_tree
     update_tree
 fi
@@ -282,7 +282,7 @@ generate_postinstall_script $VERSION
 ###########################################################################
 # Create the actual packages.
 
-if [ $CIRCLE_BRANCH == "" ]; then
+if [ "$CIRCLE_BRANCH" == "" ]; then
     echo -n "Commence creation of $ARCH packages, version $VERSION? [Y/n] "
     read response
     response=`echo $response | tr 'A-Z' 'a-z'`
@@ -323,7 +323,7 @@ echo "Debian package created successfully."
 ###########################################################################
 # Offer to tag the repo.
 
-if [ $CIRCLE_BRANCH == "" ]; then
+if [ "$CIRCLE_BRANCH" == "" ]; then
     echo -n "Tag source tree with v$VERSION and push to repo? [y/N] "
     read response
     response=`echo $response | tr 'A-Z' 'a-z'`
@@ -347,7 +347,7 @@ fi
 ###########################################################################
 # Offer to publish the packages.
 
-if [ $CIRCLE_BRANCH == "" ]; then
+if [ "$CIRCLE_BRANCH" == "" ]; then
     echo -n "Publish packages to S3? [y/N] "
     read response
     response=`echo $response | tr 'A-Z' 'a-z'`

plugins/system/cpu.go

@@ -4,29 +4,51 @@ import (
 	"fmt"
 
 	"github.com/influxdb/telegraf/plugins"
+	"github.com/influxdb/telegraf/plugins/system/ps/cpu"
 )
 
 type CPUStats struct {
 	ps        PS
+	lastStats []cpu.CPUTimesStat
+
+	PerCPU   bool `toml:"percpu"`
+	TotalCPU bool `toml:"totalcpu"`
+}
+
+func NewCPUStats(ps PS) *CPUStats {
+	return &CPUStats{
+		ps: ps,
+	}
 }
 
 func (_ *CPUStats) Description() string {
 	return "Read metrics about cpu usage"
 }
 
-func (_ *CPUStats) SampleConfig() string { return "" }
+var sampleConfig = `
+# Whether to report per-cpu stats or not
+percpu = true
+# Whether to report total system cpu stats or not
+totalcpu = true`
+
+func (_ *CPUStats) SampleConfig() string {
+	return sampleConfig
+}
 
 func (s *CPUStats) Gather(acc plugins.Accumulator) error {
-	times, err := s.ps.CPUTimes()
+	times, err := s.ps.CPUTimes(s.PerCPU, s.TotalCPU)
 	if err != nil {
 		return fmt.Errorf("error getting CPU info: %s", err)
 	}
 
-	for _, cts := range times {
+	for i, cts := range times {
 		tags := map[string]string{
 			"cpu": cts.CPU,
 		}
 
+		busy, total := busyAndTotalCpuTime(cts)
+
+		// Add total cpu numbers
 		add(acc, "user", cts.User, tags)
 		add(acc, "system", cts.System, tags)
 		add(acc, "idle", cts.Idle, tags)
@@ -38,11 +60,54 @@ func (s *CPUStats) Gather(acc plugins.Accumulator) error {
 		add(acc, "guest", cts.Guest, tags)
 		add(acc, "guestNice", cts.GuestNice, tags)
 		add(acc, "stolen", cts.Stolen, tags)
+		add(acc, "busy", busy, tags)
+
+		// Add in percentage
+		if len(s.lastStats) == 0 {
+			// If it's the 1st gather, can't get CPU stats yet
+			continue
+		}
+		lastCts := s.lastStats[i]
+		lastBusy, lastTotal := busyAndTotalCpuTime(lastCts)
+		busyDelta := busy - lastBusy
+		totalDelta := total - lastTotal
+
+		if totalDelta < 0 {
+			return fmt.Errorf("Error: current total CPU time is less than previous total CPU time")
 		}
 
+		if totalDelta == 0 {
+			continue
+		}
+
+		add(acc, "percentageUser", 100*(cts.User-lastCts.User)/totalDelta, tags)
+		add(acc, "percentageSystem", 100*(cts.System-lastCts.System)/totalDelta, tags)
+		add(acc, "percentageIdle", 100*(cts.Idle-lastCts.Idle)/totalDelta, tags)
+		add(acc, "percentageNice", 100*(cts.Nice-lastCts.Nice)/totalDelta, tags)
+		add(acc, "percentageIowait", 100*(cts.Iowait-lastCts.Iowait)/totalDelta, tags)
+		add(acc, "percentageIrq", 100*(cts.Irq-lastCts.Irq)/totalDelta, tags)
+		add(acc, "percentageSoftirq", 100*(cts.Softirq-lastCts.Softirq)/totalDelta, tags)
+		add(acc, "percentageSteal", 100*(cts.Steal-lastCts.Steal)/totalDelta, tags)
+		add(acc, "percentageGuest", 100*(cts.Guest-lastCts.Guest)/totalDelta, tags)
+		add(acc, "percentageGuestNice", 100*(cts.GuestNice-lastCts.GuestNice)/totalDelta, tags)
+		add(acc, "percentageStolen", 100*(cts.Stolen-lastCts.Stolen)/totalDelta, tags)
+
+		add(acc, "percentageBusy", 100*busyDelta/totalDelta, tags)
+
+	}
+
+	s.lastStats = times
+
 	return nil
 }
 
+func busyAndTotalCpuTime(t cpu.CPUTimesStat) (float64, float64) {
+	busy := t.User + t.System + t.Nice + t.Iowait + t.Irq + t.Softirq + t.Steal +
+		t.Guest + t.GuestNice + t.Stolen
+
+	return busy, busy + t.Idle
+}
+
 func init() {
 	plugins.Add("cpu", func() plugins.Plugin {
 		return &CPUStats{ps: &systemPS{}}

plugins/system/mock_PS.go

@@ -21,7 +21,7 @@ func (m *MockPS) LoadAvg() (*load.LoadAvgStat, error) {
 
 	return r0, r1
 }
-func (m *MockPS) CPUTimes() ([]cpu.CPUTimesStat, error) {
+func (m *MockPS) CPUTimes(perCPU, totalCPU bool) ([]cpu.CPUTimesStat, error) {
 	ret := m.Called()
 
 	r0 := ret.Get(0).([]cpu.CPUTimesStat)

plugins/system/ps.go

@@ -25,7 +25,7 @@ type DockerContainerStat struct {
 
 type PS interface {
 	LoadAvg() (*load.LoadAvgStat, error)
-	CPUTimes() ([]cpu.CPUTimesStat, error)
+	CPUTimes(perCPU, totalCPU bool) ([]cpu.CPUTimesStat, error)
 	DiskUsage() ([]*disk.DiskUsageStat, error)
 	NetIO() ([]net.NetIOCountersStat, error)
 	DiskIO() (map[string]disk.DiskIOCountersStat, error)
@@ -49,8 +49,23 @@ func (s *systemPS) LoadAvg() (*load.LoadAvgStat, error) {
 	return load.LoadAvg()
 }
 
-func (s *systemPS) CPUTimes() ([]cpu.CPUTimesStat, error) {
+func (s *systemPS) CPUTimes(perCPU, totalCPU bool) ([]cpu.CPUTimesStat, error) {
-	return cpu.CPUTimes(true)
+	var cpuTimes []cpu.CPUTimesStat
+	if perCPU {
+		if perCPUTimes, err := cpu.CPUTimes(true); err == nil {
+			cpuTimes = append(cpuTimes, perCPUTimes...)
+		} else {
+			return nil, err
+		}
+	}
+	if totalCPU {
+		if totalCPUTimes, err := cpu.CPUTimes(false); err == nil {
+			cpuTimes = append(cpuTimes, totalCPUTimes...)
+		} else {
+			return nil, err
+		}
+	}
+	return cpuTimes, nil
 }
 
 func (s *systemPS) DiskUsage() ([]*disk.DiskUsageStat, error) {

plugins/system/ps/cpu/cpu_darwin.go

@@ -90,13 +90,6 @@ func perCPUTimes() ([]CPUTimesStat, error) {
 			System: float64(cpu_ticks[C.CPU_STATE_SYSTEM]) / ClocksPerSec,
 			Nice:   float64(cpu_ticks[C.CPU_STATE_NICE]) / ClocksPerSec,
 			Idle:   float64(cpu_ticks[C.CPU_STATE_IDLE]) / ClocksPerSec,
-			Iowait:    -1,
-			Irq:       -1,
-			Softirq:   -1,
-			Steal:     -1,
-			Guest:     -1,
-			GuestNice: -1,
-			Stolen:    -1,
 		}
 
 		ret = append(ret, c)
@@ -124,13 +117,6 @@ func allCPUTimes() ([]CPUTimesStat, error) {
 		System: float64(cpuload.cpu_ticks[C.CPU_STATE_SYSTEM]) / ClocksPerSec,
 		Nice:   float64(cpuload.cpu_ticks[C.CPU_STATE_NICE]) / ClocksPerSec,
 		Idle:   float64(cpuload.cpu_ticks[C.CPU_STATE_IDLE]) / ClocksPerSec,
-		Iowait:    -1,
-		Irq:       -1,
-		Softirq:   -1,
-		Steal:     -1,
-		Guest:     -1,
-		GuestNice: -1,
-		Stolen:    -1,
 	}
 
 	return []CPUTimesStat{c}, nil

plugins/system/system_test.go

@@ -1,6 +1,8 @@
 package system
 
 import (
+	"fmt"
+	"reflect"
 	"testing"
 
 	"github.com/influxdb/telegraf/plugins/system/ps/cpu"
@@ -44,6 +46,21 @@ func TestSystemStats_GenerateStats(t *testing.T) {
 		Stolen:    0.051,
 	}
 
+	cts2 := cpu.CPUTimesStat{
+		CPU:       "cpu0",
+		User:      11.4,     // increased by 8.3
+		System:    10.9,     // increased by 2.7
+		Idle:      158.8699, // increased by 78.7699 (for total increase of 100)
+		Nice:      2.5,      // increased by 1.2
+		Iowait:    0.7,      // increased by 0.5
+		Irq:       1.2,      // increased by 1.1
+		Softirq:   0.31,     // increased by 0.2
+		Steal:     0.0002,   // increased by 0.0001
+		Guest:     12.9,     // increased by 4.8
+		GuestNice: 2.524,    // increased by 2.2
+		Stolen:    0.281,    // increased by 0.23
+	}
+
 	mps.On("CPUTimes").Return([]cpu.CPUTimesStat{cts}, nil)
 
 	du := &disk.DiskUsageStat{
@@ -171,26 +188,72 @@ func TestSystemStats_GenerateStats(t *testing.T) {
 	assert.True(t, acc.CheckValue("load5", 1.5))
 	assert.True(t, acc.CheckValue("load15", 0.8))
 
-	cs := &CPUStats{ps: &mps}
+	cs := NewCPUStats(&mps)
 
 	cputags := map[string]string{
 		"cpu": "cpu0",
 	}
 
+	preCPUPoints := len(acc.Points)
+	err = cs.Gather(&acc)
+	require.NoError(t, err)
+	numCPUPoints := len(acc.Points) - preCPUPoints
+
+	expectedCPUPoints := 12
+	assert.Equal(t, numCPUPoints, expectedCPUPoints)
+
+	// Computed values are checked with delta > 0 becasue of floating point arithmatic
+	// imprecision
+	assertContainsTaggedFloat(t, acc, "user", 3.1, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "system", 8.2, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "idle", 80.1, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "nice", 1.3, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "iowait", 0.2, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "irq", 0.1, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "softirq", 0.11, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "steal", 0.0001, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "guest", 8.1, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "guestNice", 0.324, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "stolen", 0.051, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "busy", 21.4851, 0.0005, cputags)
+
+	mps2 := MockPS{}
+	mps2.On("CPUTimes").Return([]cpu.CPUTimesStat{cts2}, nil)
+	cs.ps = &mps2
+
+	// Should have added cpu percentages too
 	err = cs.Gather(&acc)
 	require.NoError(t, err)
 
-	assert.True(t, acc.CheckTaggedValue("user", 3.1, cputags))
+	numCPUPoints = len(acc.Points) - (preCPUPoints + numCPUPoints)
-	assert.True(t, acc.CheckTaggedValue("system", 8.2, cputags))
+	expectedCPUPoints = 24
-	assert.True(t, acc.CheckTaggedValue("idle", 80.1, cputags))
+	assert.Equal(t, numCPUPoints, expectedCPUPoints)
-	assert.True(t, acc.CheckTaggedValue("nice", 1.3, cputags))
+
-	assert.True(t, acc.CheckTaggedValue("iowait", 0.2, cputags))
+	assertContainsTaggedFloat(t, acc, "user", 11.4, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("irq", 0.1, cputags))
+	assertContainsTaggedFloat(t, acc, "system", 10.9, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("softirq", 0.11, cputags))
+	assertContainsTaggedFloat(t, acc, "idle", 158.8699, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("steal", 0.0001, cputags))
+	assertContainsTaggedFloat(t, acc, "nice", 2.5, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("guest", 8.1, cputags))
+	assertContainsTaggedFloat(t, acc, "iowait", 0.7, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("guestNice", 0.324, cputags))
+	assertContainsTaggedFloat(t, acc, "irq", 1.2, 0, cputags)
-	assert.True(t, acc.CheckTaggedValue("stolen", 0.051, cputags))
+	assertContainsTaggedFloat(t, acc, "softirq", 0.31, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "steal", 0.0002, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "guest", 12.9, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "guestNice", 2.524, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "stolen", 0.281, 0, cputags)
+	assertContainsTaggedFloat(t, acc, "busy", 42.7152, 0.0005, cputags)
+
+	assertContainsTaggedFloat(t, acc, "percentageUser", 8.3, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageSystem", 2.7, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageIdle", 78.7699, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageNice", 1.2, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageIowait", 0.5, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageIrq", 1.1, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageSoftirq", 0.2, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageSteal", 0.0001, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageGuest", 4.8, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageGuestNice", 2.2, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageStolen", 0.23, 0.0005, cputags)
+	assertContainsTaggedFloat(t, acc, "percentageBusy", 21.2301, 0.0005, cputags)
 
 	err = (&DiskStats{&mps}).Gather(&acc)
 	require.NoError(t, err)
@@ -319,3 +382,44 @@ func TestSystemStats_GenerateStats(t *testing.T) {
 	assert.True(t, acc.CheckTaggedValue("total_active_file", uint64(26), dockertags))
 	assert.True(t, acc.CheckTaggedValue("total_unevictable", uint64(27), dockertags))
 }
+
+// Asserts that a given accumulator contains a measurment of type float64 with
+// specific tags within a certain distance of a given expected value. Asserts a failure
+// if the measurement is of the wrong type, or if no matching measurements are found
+//
+// Paramaters:
+//     t *testing.T            : Testing object to use
+//     acc testutil.Accumulator: Accumulator to examine
+//     measurement string      : Name of the measurement to examine
+//     expectedValue float64   : Value to search for within the measurement
+//     delta float64           : Maximum acceptable distance of an accumulated value
+//                               from the expectedValue parameter. Useful when
+//                               floating-point arithmatic imprecision makes looking
+//                               for an exact match impractical
+//     tags map[string]string  : Tag set the found measurement must have. Set to nil to
+//                               ignore the tag set.
+func assertContainsTaggedFloat(
+	t *testing.T,
+	acc testutil.Accumulator,
+	measurement string,
+	expectedValue float64,
+	delta float64,
+	tags map[string]string,
+) {
+	for _, pt := range acc.Points {
+		if pt.Measurement == measurement {
+			if (tags == nil) || reflect.DeepEqual(pt.Tags, tags) {
+				if value, ok := pt.Values["value"].(float64); ok {
+					if (value >= expectedValue-delta) && (value <= expectedValue+delta) {
+						// Found the point, return without failing
+						return
+					}
+				} else {
+					assert.Fail(t, fmt.Sprintf("Measurement \"%s\" does not have type float64", measurement))
+				}
+
+			}
+		}
+	}
+	assert.Fail(t, fmt.Sprintf("Could not find measurement \"%s\" with requested tags within %f of %f", measurement, delta, expectedValue))
+}

testdata/influx.toml

@@ -11,7 +11,7 @@ password = "root"
 database = "telegraf"
 
 [tags]
-dc = "us-phx-1" }
+dc = "us-phx-1"
 
 [redis]
 address = ":6379"

testdata/telegraf-agent.toml

@@ -57,7 +57,8 @@ database = "telegraf" # required.
 
 # Read metrics about cpu usage
 [cpu]
-  # no configuration
+totalcpu = true
+percpu = false
 
 # Read metrics about disk usage by mount point
 [disk]