func HostInfo() (*HostInfoStat, error) {
ret := &HostInfoStat{
OS: runtime.GOOS,
PlatformFamily: "freebsd",
}
hostname, err := os.Hostname()
if err == nil {
ret.Hostname = hostname
}
platform, family, version, err := GetPlatformInformation()
if err == nil {
ret.Platform = platform
ret.PlatformFamily = family
ret.PlatformVersion = version
}
system, role, err := GetVirtualization()
if err == nil {
ret.VirtualizationSystem = system
ret.VirtualizationRole = role
}
values, err := common.DoSysctrl("kern.boottime")
if err == nil {
// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
v := strings.Replace(values[2], ",", "", 1)
t, err := strconv.ParseUint(v, 10, 64)
if err == nil {
ret.Uptime = t
}
}
return ret, nil
}
func LoadAvg() (*LoadAvgStat, error) {
values, err := common.DoSysctrl("vm.loadavg")
if err != nil {
return nil, err
}
load1, err := strconv.ParseFloat(values[0], 64)
if err != nil {
return nil, err
}
load5, err := strconv.ParseFloat(values[1], 64)
if err != nil {
return nil, err
}
load15, err := strconv.ParseFloat(values[2], 64)
if err != nil {
return nil, err
}
ret := &LoadAvgStat{
Load1: float64(load1),
Load5: float64(load5),
Load15: float64(load15),
}
return ret, nil
}
// VirtualMemory returns VirtualmemoryStat.
func VirtualMemory() (*VirtualMemoryStat, error) {
ret := &VirtualMemoryStat{}
p, err := getPageSize()
if err != nil {
return nil, err
}
t, err := common.DoSysctrl("hw.memsize")
if err != nil {
return nil, err
}
total, err := strconv.ParseUint(t[0], 10, 64)
if err != nil {
return nil, err
}
err = getVmStat(p, ret)
if err != nil {
return nil, err
}
ret.Available = ret.Free + ret.Cached
ret.Total = total
ret.Used = ret.Total - ret.Free
ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
return ret, nil
}
func CPUTimes(percpu bool) ([]CPUTimesStat, error) {
var ret []CPUTimesStat
var sysctlCall string
var ncpu int
if percpu {
sysctlCall = "kern.cp_times"
ncpu, _ = CPUCounts(true)
} else {
sysctlCall = "kern.cp_time"
ncpu = 1
}
cpuTimes, err := common.DoSysctrl(sysctlCall)
if err != nil {
return ret, err
}
for i := 0; i < ncpu; i++ {
offset := CPUStates * i
user, err := strconv.ParseFloat(cpuTimes[CPUser+offset], 64)
if err != nil {
return ret, err
}
nice, err := strconv.ParseFloat(cpuTimes[CPNice+offset], 64)
if err != nil {
return ret, err
}
sys, err := strconv.ParseFloat(cpuTimes[CPSys+offset], 64)
if err != nil {
return ret, err
}
idle, err := strconv.ParseFloat(cpuTimes[CPIdle+offset], 64)
if err != nil {
return ret, err
}
intr, err := strconv.ParseFloat(cpuTimes[CPIntr+offset], 64)
if err != nil {
return ret, err
}
c := CPUTimesStat{
User: float64(user / ClocksPerSec),
Nice: float64(nice / ClocksPerSec),
System: float64(sys / ClocksPerSec),
Idle: float64(idle / ClocksPerSec),
Irq: float64(intr / ClocksPerSec),
}
if !percpu {
c.CPU = "cpu-total"
} else {
c.CPU = fmt.Sprintf("cpu%d", i)
}
ret = append(ret, c)
}
return ret, nil
}
// VirtualMemory returns VirtualmemoryStat.
func VirtualMemory() (*VirtualMemoryStat, error) {
p, err := getPageSize()
if err != nil {
return nil, err
}
total, err := common.DoSysctrl("hw.memsize")
if err != nil {
return nil, err
}
free, err := common.DoSysctrl("vm.page_free_count")
if err != nil {
return nil, err
}
parsed := make([]uint64, 0, 7)
vv := []string{
total[0],
free[0],
}
for _, target := range vv {
t, err := strconv.ParseUint(target, 10, 64)
if err != nil {
return nil, err
}
parsed = append(parsed, t)
}
ret := &VirtualMemoryStat{
Total: parsed[0],
Free: parsed[1] * p,
}
// TODO: platform independent (worked freebsd?)
ret.Available = ret.Free + ret.Buffers + ret.Cached
ret.Used = ret.Total - ret.Free
ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
return ret, nil
}
func BootTime() (int64, error) {
values, err := common.DoSysctrl("kern.boottime")
if err != nil {
return 0, err
}
// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
v := strings.Replace(values[2], ",", "", 1)
boottime, err := strconv.ParseInt(v, 10, 64)
if err != nil {
return 0, err
}
return boottime, nil
}
// SwapMemory returns swapinfo.
func SwapMemory() (*SwapMemoryStat, error) {
var ret *SwapMemoryStat
swapUsage, err := common.DoSysctrl("vm.swapusage")
if err != nil {
return ret, err
}
total := strings.Replace(swapUsage[2], "M", "", 1)
used := strings.Replace(swapUsage[5], "M", "", 1)
free := strings.Replace(swapUsage[8], "M", "", 1)
total_v, err := strconv.ParseFloat(total, 64)
if err != nil {
return nil, err
}
used_v, err := strconv.ParseFloat(used, 64)
if err != nil {
return nil, err
}
free_v, err := strconv.ParseFloat(free, 64)
if err != nil {
return nil, err
}
u := float64(0)
if total_v != 0 {
u = ((total_v - free_v) / total_v) * 100.0
}
// vm.swapusage shows "M", multiply 1000
ret = &SwapMemoryStat{
Total: uint64(total_v * 1000),
Used: uint64(used_v * 1000),
Free: uint64(free_v * 1000),
UsedPercent: u,
}
return ret, nil
}
func VirtualMemory() (*VirtualMemoryStat, error) {
pageSize, err := common.DoSysctrl("vm.stats.vm.v_page_size")
if err != nil {
return nil, err
}
p, err := strconv.ParseUint(pageSize[0], 10, 64)
if err != nil {
return nil, err
}
pageCount, err := common.DoSysctrl("vm.stats.vm.v_page_count")
if err != nil {
return nil, err
}
free, err := common.DoSysctrl("vm.stats.vm.v_free_count")
if err != nil {
return nil, err
}
active, err := common.DoSysctrl("vm.stats.vm.v_active_count")
if err != nil {
return nil, err
}
inactive, err := common.DoSysctrl("vm.stats.vm.v_inactive_count")
if err != nil {
return nil, err
}
cache, err := common.DoSysctrl("vm.stats.vm.v_cache_count")
if err != nil {
return nil, err
}
buffer, err := common.DoSysctrl("vfs.bufspace")
if err != nil {
return nil, err
}
wired, err := common.DoSysctrl("vm.stats.vm.v_wire_count")
if err != nil {
return nil, err
}
parsed := make([]uint64, 0, 7)
vv := []string{
pageCount[0],
free[0],
active[0],
inactive[0],
cache[0],
buffer[0],
wired[0],
}
for _, target := range vv {
t, err := strconv.ParseUint(target, 10, 64)
if err != nil {
return nil, err
}
parsed = append(parsed, t)
}
ret := &VirtualMemoryStat{
Total: parsed[0] * p,
Free: parsed[1] * p,
Active: parsed[2] * p,
Inactive: parsed[3] * p,
Cached: parsed[4] * p,
Buffers: parsed[5],
Wired: parsed[6] * p,
}
ret.Available = ret.Inactive + ret.Cached + ret.Free
ret.Used = ret.Active + ret.Wired + ret.Cached
ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
return ret, nil
}