Added bitbucket.org/bertimus9/systemstat to godeps

Godeps/Godeps.json

@@ -5,6 +5,10 @@
 		"./..."
 	],
 	"Deps": [
+		{
+			"ImportPath": "bitbucket.org/bertimus9/systemstat",
+			"Rev": "1468fd0db20598383c9393cccaa547de6ad99e5e"
+		},
 		{
 			"ImportPath": "bitbucket.org/ww/goautoneg",
 			"Comment": "null-5",

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/.gitignore

@@ -0,0 +1,25 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+
+*.swp
+*.swo

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/AUTHORS

@@ -0,0 +1 @@
+[Phillip](http://bitbucket.org/bertimus9) <bertimus9@gmail.com>

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/LICENSE

@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Phillip Bond
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/Makefile

@@ -0,0 +1,8 @@
+test: 
+	gofmt -s -w .
+	go test ./...
+	go get bitbucket.org/bertimus9/systemstat
+
+coverage: 
+	go get github.com/axw/gocov/gocov
+	gocov test . | gocov report

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/README.md

@@ -0,0 +1,69 @@
+# systemstat
+
+[Documentation online](http://godoc.org/bitbucket.org/bertimus9/systemstat)
+
+**systemstat** is a package written in Go generated automatically by `gobi`.
+
+**systemstat** allows you to add system statistics to your go program; it
+currently polls the linux kernel for CPU usage, free/used memory and swap
+sizes, and uptime for your go process, as well as the system you're running it
+on, and the system load. It can be used to make a crippled version of top that
+monitors the current go process and ignores other processes and the number of
+users with ttys. See the examples directory for go-top.go, which is my attempt
+at a top clone. Bear in mind that the intention of **systemstat** is to allow
+your process to monitor itself and it's environment, not to replace top.
+
+## Install (with GOPATH set on your machine)
+----------
+
+* Step 1: Get the `systemstat` package
+
+```
+go get bitbucket.org/bertimus9/systemstat
+```
+
+* Step 2 (Optional): Run tests
+
+```
+$ go test -v bitbucket.org/bertimus9/systemstat
+```
+
+* Step 3 (Optional): Run example
+
+```bash
+$ cd to the first directory in your $GOPATH
+$ cd src/bitbucket.org/bertimus9/systemstat
+$ go run examples/go-top.go
+```
+
+##Usage
+----------
+```
+package main
+
+import (
+	"bitbucket.org/bertimus9/systemstat"
+	"fmt"
+)
+
+var sample systemstat.MemSample
+
+// This example shows how easy it is to get memory information
+func main() {
+	sample = systemstat.GetMemSample()
+	fmt.Println("Total available RAM in kb:", sample.MemTotal, "k total")
+	fmt.Println("Used RAM in kb:", sample.MemUsed, "k used")
+	fmt.Println("Free RAM in kb:", sample.MemFree, "k free")
+	fmt.Printf("The output is similar to, but somewhat different than:\n\ttop -n1 | grep Mem:\n")
+}
+```
+
+##License
+----------
+
+Copyright (c) 2013 Phillip Bond
+
+Licensed under the MIT License
+
+see file LICENSE
+

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/VERSION

@@ -0,0 +1 @@
+0.0.1

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/example_simple_test.go

@@ -0,0 +1,21 @@
+// Copyright (c) 2013 Phillip Bond
+// Licensed under the MIT License
+// see file LICENSE
+
+package systemstat_test
+
+import (
+	"bitbucket.org/bertimus9/systemstat"
+	"fmt"
+)
+
+var sample systemstat.MemSample
+
+// This example shows how easy it is to get memory information
+func Example_simple() {
+	sample = systemstat.GetMemSample()
+	fmt.Println("Total available RAM in kb:", sample.MemTotal, "k total")
+	fmt.Println("Used RAM in kb:", sample.MemUsed, "k used")
+	fmt.Println("Free RAM in kb:", sample.MemFree, "k free")
+	fmt.Printf("The output is similar to, but somewhat different than:\n\ttop -n1 | grep Mem:\n")
+}

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/examples/go-top.go

@@ -0,0 +1,211 @@
+// Copyright (c) 2013 Phillip Bond
+// Licensed under the MIT License
+// see file LICENSE
+
+package main
+
+// go-top
+//
+// A sample program that emulates the way gnu top gets most of its
+// information.  It does not get information about other processes, just the
+// calling process.
+//
+// To demonstrate how the output changes, you can invoke with the
+// -coresToPeg=N option. For example:
+//
+//   go run go-top.go -coresToPeg=2
+//
+// will run two concurrent infinte loops and max out up to two cores (assuming
+// you have more than one core). Note that the loops are not tuned to always
+// hit 100% on all machines, but they get close. Also note that each core you
+// want to max out will add up to 100% CPU usage to this process, but you will
+// get less than 100% per core if there are other processes using the CPU, or
+// if the kernel is suffering high load averages, etc.
+//
+// %CCPU measures cumulative CPU usage. It is useful when you have a daemon
+// that only runs periodically, but does intense calculations. You can use
+// long sample times, on the order of minutes, but still get an accurate
+// measure of how much CPU time has been used over the life of the process,
+// even if your samples occur when the CPU is temporarily idle.
+
+import (
+	"bitbucket.org/bertimus9/systemstat"
+	"bytes"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"math"
+	"runtime"
+	"time"
+)
+
+var coresToPegPtr *int64
+
+type stats struct {
+	startTime time.Time
+
+	// stats this process
+	ProcUptime        float64 //seconds
+	ProcMemUsedPct    float64
+	ProcCPUAvg        systemstat.ProcCPUAverage
+	LastProcCPUSample systemstat.ProcCPUSample `json:"-"`
+	CurProcCPUSample  systemstat.ProcCPUSample `json:"-"`
+
+	// stats for whole system
+	LastCPUSample systemstat.CPUSample `json:"-"`
+	CurCPUSample  systemstat.CPUSample `json:"-"`
+	SysCPUAvg     systemstat.CPUAverage
+	SysMemK       systemstat.MemSample
+	LoadAverage   systemstat.LoadAvgSample
+	SysUptime     systemstat.UptimeSample
+
+	// bookkeeping
+	procCPUSampled bool
+	sysCPUSampled  bool
+}
+
+func NewStats() *stats {
+	s := stats{}
+	s.startTime = time.Now()
+	return &s
+}
+
+func (s *stats) PrintStats() {
+	up, err := time.ParseDuration(fmt.Sprintf("%fs", s.SysUptime.Uptime))
+	upstring := "SysUptime Error"
+	if err == nil {
+		updays := up.Hours() / 24
+		switch {
+		case updays >= 365:
+			upstring = fmt.Sprintf("%.0f years", updays/365)
+		case updays >= 1:
+			upstring = fmt.Sprintf("%.0f days", updays)
+		default: // less than a day
+			upstring = up.String()
+		}
+	}
+
+	fmt.Println("*********************************************************")
+	fmt.Printf("go-top - %s  up %s,\t\tload average: %.2f, %.2f, %.2f\n",
+		s.LoadAverage.Time.Format("15:04:05"), upstring, s.LoadAverage.One, s.LoadAverage.Five, s.LoadAverage.Fifteen)
+
+	fmt.Printf("Cpu(s): %.1f%%us, %.1f%%sy, %.1f%%ni, %.1f%%id, %.1f%%wa, %.1f%%hi, %.1f%%si, %.1f%%st %.1f%%gu\n",
+		s.SysCPUAvg.UserPct, s.SysCPUAvg.SystemPct, s.SysCPUAvg.NicePct, s.SysCPUAvg.IdlePct,
+		s.SysCPUAvg.IowaitPct, s.SysCPUAvg.IrqPct, s.SysCPUAvg.SoftIrqPct, s.SysCPUAvg.StealPct,
+		s.SysCPUAvg.GuestPct)
+
+	fmt.Printf("Mem:  %9dk total, %9dk used, %9dk free, %9dk buffers\n", s.SysMemK.MemTotal,
+		s.SysMemK.MemUsed, s.SysMemK.MemFree, s.SysMemK.Buffers)
+	fmt.Printf("Swap: %9dk total, %9dk used, %9dk free, %9dk cached\n", s.SysMemK.SwapTotal,
+		s.SysMemK.SwapUsed, s.SysMemK.SwapFree, s.SysMemK.Cached)
+
+	fmt.Println("************************************************************")
+	if s.ProcCPUAvg.PossiblePct > 0 {
+		cpuHelpText := "[see -help flag to change %cpu]"
+		if *coresToPegPtr > 0 {
+			cpuHelpText = ""
+		}
+		fmt.Printf("ProcessName\tRES(k)\t%%CPU\t%%CCPU\t%%MEM\n")
+		fmt.Printf("this-process\t%d\t%3.1f\t%2.1f\t%3.1f\t%s\n",
+			s.CurProcCPUSample.ProcMemUsedK,
+			s.ProcCPUAvg.TotalPct,
+			100*s.CurProcCPUSample.Total/s.ProcUptime/float64(1),
+			100*float64(s.CurProcCPUSample.ProcMemUsedK)/float64(s.SysMemK.MemTotal),
+			cpuHelpText)
+		fmt.Println("%CCPU is cumulative CPU usage over this process' life.")
+		fmt.Printf("Max this-process CPU possible: %3.f%%\n", s.ProcCPUAvg.PossiblePct)
+	}
+}
+
+func (s *stats) GatherStats(percent bool) {
+	s.SysUptime = systemstat.GetUptime()
+	s.ProcUptime = time.Since(s.startTime).Seconds()
+
+	s.SysMemK = systemstat.GetMemSample()
+	s.LoadAverage = systemstat.GetLoadAvgSample()
+
+	s.LastCPUSample = s.CurCPUSample
+	s.CurCPUSample = systemstat.GetCPUSample()
+
+	if s.sysCPUSampled { // we need 2 samples to get an average
+		s.SysCPUAvg = systemstat.GetCPUAverage(s.LastCPUSample, s.CurCPUSample)
+	}
+	// we have at least one sample, subsequent rounds will give us an average
+	s.sysCPUSampled = true
+
+	s.ProcMemUsedPct = 100 * float64(s.CurProcCPUSample.ProcMemUsedK) / float64(s.SysMemK.MemTotal)
+
+	s.LastProcCPUSample = s.CurProcCPUSample
+	s.CurProcCPUSample = systemstat.GetProcCPUSample()
+	if s.procCPUSampled {
+		s.ProcCPUAvg = systemstat.GetProcCPUAverage(s.LastProcCPUSample, s.CurProcCPUSample, s.ProcUptime)
+	}
+	s.procCPUSampled = true
+}
+
+func main() {
+	// get command line flags
+	coresToPegPtr = flag.Int64("coresToPeg", 0, "how many CPU cores would you like to artificially peg to 100% usage")
+
+	flag.Parse()
+
+	// this will help us poll the OS to get system statistics
+	stats := NewStats()
+
+	runtime.GOMAXPROCS(runtime.NumCPU())
+
+	// WARNING: each call to burnCPU() will peg one core
+	// of your machine to 100%
+	// If you have code you'd like to drop in to this example,
+	// just run "go yourCode()" instead of "go burnCPU()
+	for i := *coresToPegPtr; i > 0; i-- {
+		fmt.Println("pegging one more CPU core.")
+		go burnCPU()
+	}
+
+	for {
+		stats.GatherStats(true)
+		stats.PrintStats()
+
+		// This next line lets out see the jsonified object
+		// produced by systemstat
+		//	printJson(stats, false)
+		time.Sleep(3 * time.Second)
+	}
+}
+
+func printJson(s *stats, indent bool) {
+	b, err := json.Marshal(s)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+	dst := new(bytes.Buffer)
+	if indent {
+		json.Indent(dst, b, "", "   ")
+	} else {
+		dst.Write(b)
+	}
+	fmt.Println(dst.String())
+	time.Sleep(time.Second * 3)
+}
+
+func burnCPU() {
+	time.Sleep(4 * time.Second)
+	for {
+		b := 1.0
+		c := 1.0
+		d := 1.0
+		for j := 1; j < 1000; j++ {
+			b *= float64(j)
+			for k := 1; k < 700000; k++ {
+
+				c *= float64(k)
+				d = (28 + b*b/3.23412) / math.Sqrt(c*c)
+				c *= d
+			}
+			time.Sleep(500 * time.Nanosecond)
+			runtime.Gosched()
+		}
+		time.Sleep(10 * time.Second)
+	}
+}

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/systemstat.go

@@ -0,0 +1,141 @@
+// Copyright (c) 2013 Phillip Bond
+// Licensed under the MIT License
+// see file LICENSE
+
+package systemstat
+
+import (
+	"time"
+)
+
+// CPUSample is an object that represents the breakdown of time spent by the
+// CPU in various types of tasks. Two CPUSamples are required to find the
+// average usage over time, represented by the CPUAverage object. The CPUSample
+// is taken from the line "cpu" from /proc/stat in the Linux kernel.
+//
+// Summarized from the proc(5) man page:
+// /proc/stat :
+//        kernel/system  statistics.   Varies  with  architecture.
+type CPUSample struct {
+	User    uint64    // time spent in user mode
+	Nice    uint64    // time spent in user mode with low priority (nice)
+	System  uint64    // time spent in system mode
+	Idle    uint64    // time spent in the idle task
+	Iowait  uint64    // time spent waiting for I/O to complete (since Linux 2.5.41)
+	Irq     uint64    // time spent servicing  interrupts  (since  2.6.0-test4)
+	SoftIrq uint64    // time spent servicing softirqs (since 2.6.0-test4)
+	Steal   uint64    // time spent in other OSes when running in a virtualized environment
+	Guest   uint64    // time spent running a virtual CPU for guest operating systems under the control of the Linux kernel.
+	Name    string    // name of the line in /proc/stat; cpu, cpu1, etc
+	Time    time.Time // when the sample was taken
+	Total   uint64    // total of all time fields
+}
+
+type ProcCPUSample struct {
+	User         float64   // time spent in user mode
+	System       float64   // time spent in system mode
+	Time         time.Time // when the sample was taken
+	Total        float64   // total of all time fields
+	ProcMemUsedK int64
+}
+
+type ProcCPUAverage struct {
+	UserPct            float64   // time spent in user mode
+	SystemPct          float64   // time spent in system mode
+	TotalPct           float64   // total of all time fields
+	PossiblePct        float64   // total of all time fields
+	CumulativeTotalPct float64   // total of all time throughout process life
+	Time               time.Time // when the sample was taken
+	Seconds            float64   // how many seconds between the two samples
+}
+
+// SimpleCPUAverage is an object that represents the average cpu usage over a
+// time period. It is calculated by taking the difference between two
+// CPUSamples (whose units are clock ticks), dividing by the number of elapsed
+// ticks between the samples, and converting to a percent. It is a simplified version of the CPUAverage in that it only accounts for time in the Idle task and all other time (Busy).
+type SimpleCPUAverage struct {
+	BusyPct float64 // percent of time spent by CPU performing all non-idle tasks
+	IdlePct float64 // percent of time spent by CPU in the idle task
+}
+
+// CPUAverage is an object that represents the average cpu usage over a
+// time period. It is calculated by taking the difference between two
+// CPUSamples (whose units are clock ticks), dividing by the number of elapsed
+// ticks between the samples, and converting to a percent.
+type CPUAverage struct {
+	UserPct    float64
+	NicePct    float64
+	SystemPct  float64
+	IdlePct    float64
+	IowaitPct  float64
+	IrqPct     float64
+	SoftIrqPct float64
+	StealPct   float64
+	GuestPct   float64
+	Time       time.Time
+	Seconds    float64 // how many seconds between the two samples
+}
+
+type MemSample struct {
+	Buffers   uint64
+	Cached    uint64
+	MemTotal  uint64
+	MemUsed   uint64
+	MemFree   uint64
+	SwapTotal uint64
+	SwapUsed  uint64
+	SwapFree  uint64
+	Time      time.Time
+}
+
+type LoadAvgSample struct {
+	One     float64
+	Five    float64
+	Fifteen float64
+	Time    time.Time
+}
+
+type UptimeSample struct {
+	Uptime float64
+	Time   time.Time
+}
+
+// GetCPUAverage returns the average cpu usage between two CPUSamples.
+func GetCPUAverage(first CPUSample, second CPUSample) CPUAverage {
+	return getCPUAverage(first, second)
+}
+
+// GetSimpleCPUAverage returns an aggregated average cpu usage between two CPUSamples.
+func GetSimpleCPUAverage(first CPUSample, second CPUSample) SimpleCPUAverage {
+	return getSimpleCPUAverage(first, second)
+}
+
+// GetProcCPUAverage returns the average cpu usage of this running process
+func GetProcCPUAverage(first ProcCPUSample, second ProcCPUSample, procUptime float64) (avg ProcCPUAverage) {
+	return getProcCPUAverage(first, second, procUptime)
+}
+
+// GetCPUSample takes a snapshot of kernel statistics from the /proc/stat file.
+func GetCPUSample() (samp CPUSample) {
+	return getCPUSample("/proc/stat")
+}
+
+// GetProcCPUSample takes a snapshot of kernel statistics from the /proc/stat file.
+func GetProcCPUSample() (samp ProcCPUSample) {
+	return getProcCPUSample()
+}
+
+// GetUptime takes a snapshot of load info from the /proc/loadavg file.
+func GetUptime() (samp UptimeSample) {
+	return getUptime("/proc/uptime")
+}
+
+// GetLoadAvgSample takes a snapshot of load info from the /proc/loadavg file.
+func GetLoadAvgSample() (samp LoadAvgSample) {
+	return getLoadAvgSample("/proc/loadavg")
+}
+
+// GetMemSample takes a snapshot of memory info from the /proc/meminfo file.
+func GetMemSample() (samp MemSample) {
+	return getMemSample("/proc/meminfo")
+}

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/systemstat_linux.go

@@ -0,0 +1,244 @@
+// Copyright (c) 2013 Phillip Bond
+// Licensed under the MIT License
+// see file LICENSE
+
+// +build linux
+
+package systemstat
+
+import (
+	"bufio"
+	"bytes"
+	"io"
+	"io/ioutil"
+	"log"
+	"runtime"
+	"strconv"
+	"strings"
+	"syscall"
+	"time"
+)
+
+func getUptime(procfile string) (uptime UptimeSample) {
+	// read in whole uptime file with cpu usage information ;"/proc/uptime"
+	contents, err := ioutil.ReadFile(procfile)
+	uptime.Time = time.Now()
+	if err != nil {
+		return
+	}
+
+	reader := bufio.NewReader(bytes.NewBuffer(contents))
+	line, _, err := reader.ReadLine()
+	fields := strings.Fields(string(line))
+
+	val, numerr := strconv.ParseFloat(fields[0], 64)
+	if numerr != nil {
+		return
+	}
+	uptime.Uptime = val
+
+	return
+}
+
+func getLoadAvgSample(procfile string) (samp LoadAvgSample) {
+	// read in whole loadavg file with cpu usage information ;"/proc/loadavg"
+	contents, err := ioutil.ReadFile(procfile)
+	samp.Time = time.Now()
+	if err != nil {
+		return
+	}
+
+	reader := bufio.NewReader(bytes.NewBuffer(contents))
+	line, _, err := reader.ReadLine()
+	fields := strings.Fields(string(line))
+	for i := 0; i < 3; i++ {
+		val, numerr := strconv.ParseFloat(fields[i], 64)
+		if numerr != nil {
+			return
+		}
+		switch i {
+		case 0:
+			samp.One = val
+		case 1:
+			samp.Five = val
+		case 2:
+			samp.Fifteen = val
+		}
+	}
+
+	return
+}
+
+func getMemSample(procfile string) (samp MemSample) {
+	want := map[string]bool{
+		"Buffers:":   true,
+		"Cached:":    true,
+		"MemTotal:":  true,
+		"MemFree:":   true,
+		"MemUsed:":   true,
+		"SwapTotal:": true,
+		"SwapFree:":  true,
+		"SwapUsed:":  true}
+
+	// read in whole meminfo file with cpu usage information ;"/proc/meminfo"
+	contents, err := ioutil.ReadFile(procfile)
+	samp.Time = time.Now()
+	if err != nil {
+		return
+	}
+
+	reader := bufio.NewReader(bytes.NewBuffer(contents))
+	for {
+		line, _, err := reader.ReadLine()
+		if err == io.EOF {
+			break
+		}
+
+		fields := strings.Fields(string(line))
+		fieldName := fields[0]
+
+		_, ok := want[fieldName]
+		if ok && len(fields) == 3 {
+			val, numerr := strconv.ParseUint(fields[1], 10, 64)
+			if numerr != nil {
+				return
+			}
+			switch fieldName {
+			case "Buffers:":
+				samp.Buffers = val
+			case "Cached:":
+				samp.Cached = val
+			case "MemTotal:":
+				samp.MemTotal = val
+			case "MemFree:":
+				samp.MemFree = val
+			case "SwapTotal:":
+				samp.SwapTotal = val
+			case "SwapFree:":
+				samp.SwapFree = val
+			}
+		}
+	}
+	samp.MemUsed = samp.MemTotal - samp.MemFree
+	samp.SwapUsed = samp.SwapTotal - samp.SwapFree
+	return
+}
+
+func getProcCPUSample() (s ProcCPUSample) {
+	var processInfo syscall.Rusage
+	syscall.Getrusage(syscall.RUSAGE_SELF, &processInfo)
+
+	s.Time = time.Now()
+	s.ProcMemUsedK = int64(processInfo.Maxrss)
+	s.User = float64(processInfo.Utime.Usec)/1000000 + float64(processInfo.Utime.Sec)
+	s.System = float64(processInfo.Stime.Usec)/1000000 + float64(processInfo.Stime.Sec)
+	s.Total = s.User + s.System
+
+	return
+}
+
+func getCPUSample(procfile string) (samp CPUSample) {
+	// read in whole proc file with cpu usage information ; "/proc/stat"
+	contents, err := ioutil.ReadFile(procfile)
+	samp.Time = time.Now()
+	if err != nil {
+		return
+	}
+
+	reader := bufio.NewReader(bytes.NewBuffer(contents))
+	for {
+		line, _, err := reader.ReadLine()
+		if err == io.EOF {
+			break
+		}
+
+		fields := strings.Fields(string(line))
+
+		if len(fields) > 0 {
+			fieldName := fields[0]
+			if fieldName == "cpu" {
+				parseCPUFields(fields, &samp)
+			}
+		}
+	}
+	return
+}
+
+func getSimpleCPUAverage(first CPUSample, second CPUSample) (avg SimpleCPUAverage) {
+	//walltimediff := second.Time.Sub(first.Time)
+	//dT := float64(first.Total - second.Total)
+
+	dI := float64(second.Idle - first.Idle)
+	dTot := float64(second.Total - first.Total)
+	avg.IdlePct = dI / dTot * 100
+	avg.BusyPct = (dTot - dI) * 100 / dTot
+	//log.Printf("cpu idle ticks %f, total ticks %f, idle pct %f, busy pct %f\n", dI, dTot, avg.IdlePct, avg.BusyPct)
+	return
+}
+
+func subtractAndConvertTicks(first uint64, second uint64) float64 {
+	return float64(first - second)
+}
+
+func getCPUAverage(first CPUSample, second CPUSample) (avg CPUAverage) {
+	dTot := float64(second.Total - first.Total)
+	invQuotient := 100.00 / dTot
+
+	avg.UserPct = subtractAndConvertTicks(second.User, first.User) * invQuotient
+	avg.NicePct = subtractAndConvertTicks(second.Nice, first.Nice) * invQuotient
+	avg.SystemPct = subtractAndConvertTicks(second.System, first.System) * invQuotient
+	avg.IdlePct = subtractAndConvertTicks(second.Idle, first.Idle) * invQuotient
+	avg.IowaitPct = subtractAndConvertTicks(second.Iowait, first.Iowait) * invQuotient
+	avg.IrqPct = subtractAndConvertTicks(second.Irq, first.Irq) * invQuotient
+	avg.SoftIrqPct = subtractAndConvertTicks(second.SoftIrq, first.SoftIrq) * invQuotient
+	avg.StealPct = subtractAndConvertTicks(second.Steal, first.Steal) * invQuotient
+	avg.GuestPct = subtractAndConvertTicks(second.Guest, first.Guest) * invQuotient
+	avg.Time = second.Time
+	avg.Seconds = second.Time.Sub(first.Time).Seconds()
+	return
+}
+
+func getProcCPUAverage(first ProcCPUSample, second ProcCPUSample, procUptime float64) (avg ProcCPUAverage) {
+	dT := second.Time.Sub(first.Time).Seconds()
+
+	avg.UserPct = 100 * (second.User - first.User) / dT
+	avg.SystemPct = 100 * (second.System - first.System) / dT
+	avg.TotalPct = 100 * (second.Total - first.Total) / dT
+	avg.PossiblePct = 100.0 * float64(runtime.NumCPU())
+	avg.CumulativeTotalPct = 100 * second.Total / procUptime
+	avg.Time = second.Time
+	avg.Seconds = dT
+	return
+}
+
+func parseCPUFields(fields []string, stat *CPUSample) {
+	numFields := len(fields)
+	stat.Name = fields[0]
+	for i := 1; i < numFields; i++ {
+		val, numerr := strconv.ParseUint(fields[i], 10, 64)
+		if numerr != nil {
+			log.Println("systemstat.parseCPUFields(): Error parsing (field, value): ", i, fields[i])
+		}
+		stat.Total += val
+		switch i {
+		case 1:
+			stat.User = val
+		case 2:
+			stat.Nice = val
+		case 3:
+			stat.System = val
+		case 4:
+			stat.Idle = val
+		case 5:
+			stat.Iowait = val
+		case 6:
+			stat.Irq = val
+		case 7:
+			stat.SoftIrq = val
+		case 8:
+			stat.Steal = val
+		case 9:
+			stat.Guest = val
+		}
+	}
+}

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/systemstat_test.go

@@ -0,0 +1,35 @@
+// Copyright (c) 2013 Phillip Bond
+// Licensed under the MIT License
+// see file LICENSE
+
+package systemstat
+
+import (
+	"fmt"
+	"testing"
+)
+
+var (
+	msgFail = "%v method fails. Expects %v, returns %v"
+)
+
+func TestGetUptime(t *testing.T) {
+	s := getUptime("testdata/uptime")
+	if s.Uptime != 18667.53 {
+		t.Errorf(msgFail, "getUptime", "18667.53", s.Uptime)
+	}
+}
+
+func TestGetLoadAvgSample(t *testing.T) {
+	s := getLoadAvgSample("testdata/loadavg")
+	fmt.Printf("%#v\n", s)
+	if s.One != 0.1 {
+		t.Errorf(msgFail, "getUptime", "0.1", s.One)
+	}
+	if s.Five != 0.15 {
+		t.Errorf(msgFail, "getUptime", "0.15", s.Five)
+	}
+	if s.Fifteen != 0.14 {
+		t.Errorf(msgFail, "getUptime", "0.14", s.Fifteen)
+	}
+}

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/loadavg

@@ -0,0 +1 @@
+0.10 0.15 0.14 1/538 27757

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/meminfo

@@ -0,0 +1,42 @@
+MemTotal:        3768292 kB
+MemFree:          831872 kB
+Buffers:          153268 kB
+Cached:          1622412 kB
+SwapCached:            0 kB
+Active:          1287508 kB
+Inactive:        1297924 kB
+Active(anon):     811384 kB
+Inactive(anon):   227652 kB
+Active(file):     476124 kB
+Inactive(file):  1070272 kB
+Unevictable:         196 kB
+Mlocked:             196 kB
+SwapTotal:       7907324 kB
+SwapFree:        7907324 kB
+Dirty:               228 kB
+Writeback:             0 kB
+AnonPages:        809948 kB
+Mapped:           226452 kB
+Shmem:            229284 kB
+Slab:             210268 kB
+SReclaimable:     148028 kB
+SUnreclaim:        62240 kB
+KernelStack:        4344 kB
+PageTables:        37932 kB
+NFS_Unstable:          0 kB
+Bounce:                0 kB
+WritebackTmp:          0 kB
+CommitLimit:     9791468 kB
+Committed_AS:    4513904 kB
+VmallocTotal:   34359738367 kB
+VmallocUsed:      368496 kB
+VmallocChunk:   34359365956 kB
+HardwareCorrupted:     0 kB
+AnonHugePages:         0 kB
+HugePages_Total:       0
+HugePages_Free:        0
+HugePages_Rsvd:        0
+HugePages_Surp:        0
+Hugepagesize:       2048 kB
+DirectMap4k:      126592 kB
+DirectMap2M:     3786752 kB

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat0

@@ -0,0 +1 @@
+28267 (go-top) S 28256 28256 27864 34816 28256 4202496 736 0 0 0 17470 14 0 0 20 0 7 0 1882735 274173952 571 18446744073709551615 4194368 5592552 140737466979680 139798064197344 4333379 0 0 0 2143420159 18446744073709551615 0 0 17 1 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat1

@@ -0,0 +1 @@
+28267 (go-top) R 28256 28256 27864 34816 28256 4202496 736 0 0 0 18773 16 0 0 20 0 7 0 1882735 274173952 571 18446744073709551615 4194368 5592552 140737466979680 139798065368712 4457862 0 0 0 2143420159 18446744073709551615 0 0 17 3 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat2

@@ -0,0 +1 @@
+28267 (go-top) R 28256 28256 27864 34816 28256 4202496 738 0 0 0 20618 18 0 0 20 0 7 0 1882735 274239488 571 18446744073709551615 4194368 5592552 140737466979680 140737466979424 4203351 0 0 0 2143420159 18446744073709551615 0 0 17 0 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat3

@@ -0,0 +1 @@
+28267 (go-top) R 28256 28256 27864 34816 28256 4202496 738 0 0 0 21641 19 0 0 20 0 7 0 1882735 274239488 571 18446744073709551615 4194368 5592552 140737466979680 139798065356424 4333379 0 0 0 2143420159 18446744073709551615 0 0 17 0 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat5

@@ -0,0 +1 @@
+28267 (go-top) R 28256 28256 27864 34816 28256 4202496 738 0 0 0 23722 21 0 0 20 0 7 0 1882735 274239488 571 18446744073709551615 4194368 5592552 140737466979680 139798065368712 4203351 0 0 0 2143420159 18446744073709551615 0 0 17 1 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/procstat6

@@ -0,0 +1 @@
+28267 (go-top) S 28256 28256 27864 34816 28256 4202496 741 0 0 0 25512 22 0 0 20 0 7 0 1882735 274305024 571 18446744073709551615 4194368 5592552 140737466979680 140737466979424 4333379 0 0 0 2143420159 18446744073709551615 0 0 17 2 0 0 0 0 0

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat

@@ -0,0 +1,12 @@
+cpu  17313 714 8241 717906 1456 0 364 0 0 0
+cpu0 6642 289 3526 173411 1162 0 355 0 0 0
+cpu1 2193 88 1066 183608 86 0 2 0 0 0
+cpu2 6463 217 2578 177186 141 0 4 0 0 0
+cpu3 2014 118 1070 183699 65 0 2 0 0 0
+intr 2312829 54 5540 0 0 0 0 0 0 1 24723 0 0 262321 0 0 0 733 0 0 34 0 0 0 141 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 124099 1226 121928 26 141511 145 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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+procs_blocked 0
+softirq 923034 6 201522 63 2716 129127 6 168304 89194 629 331467

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat2

@@ -0,0 +1,12 @@
+cpu  17328 714 8254 725156 1457 0 366 0 0 0
+cpu0 6648 289 3531 175213 1164 0 356 0 0 0
+cpu1 2198 88 1066 185425 86 0 2 0 0 0
+cpu2 6466 217 2584 178996 141 0 4 0 0 0
+cpu3 2015 118 1071 185521 65 0 2 0 0 0
+intr 2316896 54 5562 0 0 0 0 0 0 1 24939 0 0 262321 0 0 0 733 0 0 34 0 0 0 141 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 124124 1226 123058 26 142249 145 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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+softirq 925673 6 202044 63 2716 129146 6 169061 89550 633 332448

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat3

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+softirq 939514 6 208124 63 2720 129245 6 170565 91355 637 336793

Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat4

@@ -0,0 +1,12 @@
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+cpu0 7831 289 3602 183989 1177 0 361 0 0 0
+cpu1 5075 88 1096 192627 86 0 3 0 0 0
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Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat5

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+cpu1 5391 88 1102 193577 86 0 3 0 0 0
+cpu2 8115 217 2646 188622 142 0 5 0 0 0
+cpu3 3884 118 1100 194996 66 0 2 0 0 0
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Godeps/_workspace/src/bitbucket.org/bertimus9/systemstat/testdata/stat6

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+cpu  31643 714 8507 766175 1477 0 377 0 0 0
+cpu0 9865 289 3628 185726 1182 0 366 0 0 0
+cpu1 6867 88 1110 194656 86 0 3 0 0 0
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