- morning := time.Now()
- elapsed := morning.Sub(bedtime).Nanoseconds() / int64(time.Millisecond)
- /*{
- c, _ := os.Open(cpuacct_usage)
- b, _ := ioutil.ReadAll(c)
- var next int64
- fmt.Sscanf(string(b), "%d", &next)
- if last_usage != 0 {
- stderr <- fmt.Sprintf("crunchstat: cpuacct.usage %v", (next-last_usage)/10000000)
- }
- //fmt.Printf("usage %d %d %d %d%%\n", last_usage, next, next-last_usage, (next-last_usage)/10000000)
- last_usage = next
- c.Close()
- }*/
- var cpus int64 = 0
- if cpuset_cpus != "" {
- c, err := os.Open(cpuset_cpus)
- if err != nil {
- stderr <- fmt.Sprintf("open %s: %s", cpuset_cpus, err)
- continue
- }
- b, _ := ioutil.ReadAll(c)
- sp := strings.Split(string(b), ",")
- for _, v := range sp {
- var min, max int64
- n, _ := fmt.Sscanf(v, "%d-%d", &min, &max)
- if n == 2 {
- cpus += (max - min) + 1
- } else {
- cpus += 1
- }
- }
-
- if cpus != last_cpucount {
- stderr <- fmt.Sprintf("crunchstat: cpuset.cpus %v", cpus)
- }
- last_cpucount = cpus
-
- c.Close()
- }
- if cpus == 0 {
- cpus = 1
- }
- if cpuacct_stat != "" {
- c, err := os.Open(cpuacct_stat)
- if err != nil {
- stderr <- fmt.Sprintf("open %s: %s", cpuacct_stat, err)
- // Next time around, last_user would
- // be >1 interval old, so stats will
- // be incorrect. Start over instead.
- last_user = -1
- continue
- }
- b, _ := ioutil.ReadAll(c)
- var next_user int64
- var next_sys int64
- fmt.Sscanf(string(b), "user %d\nsystem %d", &next_user, &next_sys)
- c.Close()
-
- if elapsed > 0 && last_user != -1 {
- user_diff := next_user - last_user
- sys_diff := next_sys - last_sys
- // Assume we're reading stats based on 100
- // jiffies per second. Because the elapsed
- // time is in milliseconds, we need to boost
- // that to 1000 jiffies per second, then boost
- // it by another 100x to get a percentage, then
- // finally divide by the actual elapsed time
- // and the number of cpus to get average load
- // over the polling period.
- user_pct := (user_diff * 10 * 100) / (elapsed * cpus)
- sys_pct := (sys_diff * 10 * 100) / (elapsed * cpus)
-
- stderr <- fmt.Sprintf("crunchstat: cpuacct.stat user %v", user_pct)
- stderr <- fmt.Sprintf("crunchstat: cpuacct.stat sys %v", sys_pct)
- }
-
- /*fmt.Printf("user %d %d %d%%\n", last_user, next_user, next_user-last_user)
- fmt.Printf("sys %d %d %d%%\n", last_sys, next_sys, next_sys-last_sys)
- fmt.Printf("sum %d%%\n", (next_user-last_user)+(next_sys-last_sys))*/
- last_user = next_user
- last_sys = next_sys
- }
- if blkio_io_service_bytes != "" {
- c, err := os.Open(blkio_io_service_bytes)
- if err != nil {
- stderr <- fmt.Sprintf("open %s: %s", blkio_io_service_bytes, err)
- continue
- }
- b := bufio.NewScanner(c)
- var device, op string
- var next int64
- for b.Scan() {
- if _, err := fmt.Sscanf(string(b.Text()), "%s %s %d", &device, &op, &next); err == nil {
- if disk[device] == nil {
- disk[device] = new(Disk)
- }
- if op == "Read" {
- disk[device].last_read = disk[device].next_read
- disk[device].next_read = next
- if disk[device].last_read > 0 && (disk[device].next_read != disk[device].last_read) {
- stderr <- fmt.Sprintf("crunchstat: blkio.io_service_bytes %s read %v", device, disk[device].next_read-disk[device].last_read)
- }
- }
- if op == "Write" {
- disk[device].last_write = disk[device].next_write
- disk[device].next_write = next
- if disk[device].last_write > 0 && (disk[device].next_write != disk[device].last_write) {
- stderr <- fmt.Sprintf("crunchstat: blkio.io_service_bytes %s write %v", device, disk[device].next_write-disk[device].last_write)
- }
- }
- }
- }
- c.Close()
- }
-
- if memory_stat != "" {
- c, err := os.Open(memory_stat)
- if err != nil {
- stderr <- fmt.Sprintf("open %s: %s", memory_stat, err)
- continue
- }
- b := bufio.NewScanner(c)
- var stat string
- var val int64
- for b.Scan() {
- if _, err := fmt.Sscanf(string(b.Text()), "%s %d", &stat, &val); err == nil {
- if stat == "rss" {
- stderr <- fmt.Sprintf("crunchstat: memory.stat rss %v", val)
- }
- }
- }
- c.Close()
- }