-
Notifications
You must be signed in to change notification settings - Fork 0
/
load.go
90 lines (83 loc) · 1.72 KB
/
load.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
package load
import (
"fmt"
"log"
"os"
"strconv"
"strings"
)
type Load struct {
one float64
five float64
fifteen float64
proc_running int
proc_total int
lastpid int
}
type LA_CONST int
const (
LA_ONEMIN LA_CONST = iota
LA_FIVEMIN
LA_FIFTEENMIN
// Remember LA_PROC_TOTAL is not a separate entry when parsing.
LA_PROC_RUN
LA_LASTPID
)
func (ld *Load) InfoPrint() string {
s := fmt.Sprintf(
"r/t: %d/%d\tla: %.2f,%.2f,%.2f",
ld.proc_running,
ld.proc_total,
ld.one,
ld.five,
ld.fifteen,
)
return s
}
func LoadAvg() (*Load, error) {
f, err := os.ReadFile("/proc/loadavg")
if err != nil {
log.Fatal(err)
}
loadinfo := new(Load)
sp := strings.Split(strings.TrimSuffix(string(f), "\n"), " ")
// The running/total process entries are not space-delimited so parse those
// a little different
var i LA_CONST
for i = LA_ONEMIN; i <= LA_LASTPID+1; i++ {
switch i {
case LA_ONEMIN:
loadinfo.one, err = strconv.ParseFloat(sp[i], 64)
if err != nil {
return nil, err
}
case LA_FIVEMIN:
loadinfo.five, err = strconv.ParseFloat(sp[i], 64)
if err != nil {
return nil, err
}
case LA_FIFTEENMIN:
loadinfo.fifteen, err = strconv.ParseFloat(sp[i], 64)
if err != nil {
return nil, err
}
case LA_PROC_RUN:
// These are not space delimited but shown like X/Y in the loadavg file
procs := strings.Split(sp[i], "/")
loadinfo.proc_running, err = strconv.Atoi(procs[0])
if err != nil {
return nil, err
}
loadinfo.proc_total, err = strconv.Atoi(procs[1])
if err != nil {
return nil, err
}
case LA_LASTPID:
loadinfo.lastpid, err = strconv.Atoi(sp[i])
if err != nil {
return nil, err
}
}
}
return loadinfo, nil
}