func showNetStat(buffer *bytes.Buffer, prev_rec *ss.StatRecord, cur_rec *ss.StatRecord) error {
dusage, err := ss.GetNetUsage(
prev_rec.Time, prev_rec.Net,
cur_rec.Time, cur_rec.Net,
)
if err != nil {
return err
}
buffer.WriteString(`,"net":`)
dusage.WriteJsonTo(buffer)
return nil
}
func main() {
var cheader ss.CommonHeader
var pheader ss.PlatformHeader
parseArgs()
f, err := os.Open(option.logfile)
if err != nil {
panic(err)
}
dec := gob.NewDecoder(f)
err = dec.Decode(&cheader)
if err == io.EOF {
return
}
if err != nil {
panic(err)
}
err = dec.Decode(&pheader)
if err == io.EOF {
return
}
if err != nil {
panic(err)
}
var fst_record ss.StatRecord
// read first record
err = dec.Decode(&fst_record)
if err == io.EOF {
return
} else if err != nil {
panic(err)
}
// loop until last line
var lst_records [2]ss.StatRecord
idx := 0
for {
err = dec.Decode(&lst_records[idx])
if err == io.EOF {
idx ^= 1
break
} else if err != nil {
panic(err)
}
idx ^= 1
}
lst_record := lst_records[idx]
var cpu_usage *ss.CpuUsage = nil
var intr_usage *ss.InterruptUsage = nil
var disk_usage *ss.DiskUsage = nil
var net_usage *ss.NetUsage = nil
if fst_record.Cpu != nil && lst_record.Cpu != nil {
cpu_usage, err = ss.GetCpuUsage(fst_record.Cpu, lst_record.Cpu)
}
if fst_record.Interrupt != nil && lst_record.Interrupt != nil {
intr_usage, err = ss.GetInterruptUsage(
fst_record.Time, fst_record.Interrupt,
lst_record.Time, lst_record.Interrupt,
)
}
if fst_record.Disk != nil && lst_record.Disk != nil {
disk_usage, err = ss.GetDiskUsage1(
fst_record.Time, fst_record.Disk,
lst_record.Time, lst_record.Disk,
option.disk_only_regex)
}
if fst_record.Disk != nil && lst_record.Disk != nil {
net_usage, err = ss.GetNetUsage(
fst_record.Time, fst_record.Net,
lst_record.Time, lst_record.Net)
}
interval := lst_record.Time.Sub(fst_record.Time)
if option.json {
buf := bytes.NewBuffer([]byte{})
buf.WriteString(fmt.Sprintf(`{"exectime":%.3f`, interval.Seconds()))
if cpu_usage != nil {
buf.WriteString(`,"cpu":`)
cpu_usage.WriteJsonTo(buf)
}
if intr_usage != nil {
buf.WriteString(`,"intr":`)
intr_usage.WriteJsonTo(buf)
}
if disk_usage != nil {
buf.WriteString(`,"disk":`)
disk_usage.WriteJsonTo(buf)
}
if net_usage != nil {
buf.WriteString(`,"net":`)
net_usage.WriteJsonTo(buf)
}
buf.WriteByte('}')
fmt.Println(buf.String())
} else {
if option.title == "" {
fmt.Println("== performance summary ==")
} else {
fmt.Printf("== performance summary of '%s' ==\n", option.title)
}
fmt.Printf(`
Duration: %.3f sec
`,
interval.Seconds())
if cpu_usage != nil {
fmt.Printf(`* Average CPU usage (MAX: %d %%)
* Non-idle usage: %.2f %%
%%usr: %.2f %%
%%sys: %.2f %%
%%irq: %.2f %%
%%soft: %.2f %%
%%other: %.2f %%
* Idle usage: %.2f %%
%%iowait: %.2f %%
%%idle: %.2f %%
`,
100*cpu_usage.NumCore,
100.0*float64(cpu_usage.NumCore)-cpu_usage.All.Idle-cpu_usage.All.Iowait,
cpu_usage.All.User+cpu_usage.All.Nice,
cpu_usage.All.Sys,
cpu_usage.All.Hardirq,
cpu_usage.All.Softirq,
cpu_usage.All.Steal,
cpu_usage.All.Idle+cpu_usage.All.Iowait,
cpu_usage.All.Iowait, cpu_usage.All.Idle)
}
if disk_usage != nil {
devices := []string{}
for device, _ := range *disk_usage {
if device != "total" {
devices = append(devices, device)
}
}
sort.Strings(devices)
if len(devices) > 1 {
devices = append(devices, "total")
}
for _, device := range devices {
e := (*disk_usage)[device]
fmt.Printf(`* Average DEVICE usage: %s
read IOPS: %.2f
write IOPS: %.2f
read throughput: %.2f MB/s
write throughput: %.2f MB/s
read latency: %.1f usec
write latency: %.1f usec
read amount: %.2f MB
write amount: %.2f MB
`,
device,
e.RdIops, e.WrIops,
e.RdSecps*512.0/1024.0/1024.0, e.WrSecps*512.0/1024.0/1024.0,
e.RdLatency*1000.0, e.WrLatency*1000.0,
float64(e.RdSectors*512)/1024.0/1024.0,
float64(e.WrSectors*512)/1024.0/1024.0)
}
}
}
}