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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
// Copyright 2022 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"bytes"
"fmt"
"io"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// Softirqs represents the softirq statistics.
type Softirqs struct {
Hi []uint64
Timer []uint64
NetTx []uint64
NetRx []uint64
Block []uint64
IRQPoll []uint64
Tasklet []uint64
Sched []uint64
HRTimer []uint64
RCU []uint64
}
func (fs FS) Softirqs() (Softirqs, error) {
fileName := fs.proc.Path("softirqs")
data, err := util.ReadFileNoStat(fileName)
if err != nil {
return Softirqs{}, err
}
reader := bytes.NewReader(data)
return parseSoftirqs(reader)
}
func parseSoftirqs(r io.Reader) (Softirqs, error) {
var (
softirqs = Softirqs{}
scanner = bufio.NewScanner(r)
)
if !scanner.Scan() {
return Softirqs{}, fmt.Errorf("%w: softirqs empty", ErrFileRead)
}
for scanner.Scan() {
parts := strings.Fields(scanner.Text())
var err error
// require at least one cpu
if len(parts) < 2 {
continue
}
switch parts[0] {
case "HI:":
perCPU := parts[1:]
softirqs.Hi = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.Hi[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (HI%d): %w", ErrFileParse, count, i, err)
}
}
case "TIMER:":
perCPU := parts[1:]
softirqs.Timer = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.Timer[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (TIMER%d): %w", ErrFileParse, count, i, err)
}
}
case "NET_TX:":
perCPU := parts[1:]
softirqs.NetTx = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.NetTx[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (NET_TX%d): %w", ErrFileParse, count, i, err)
}
}
case "NET_RX:":
perCPU := parts[1:]
softirqs.NetRx = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.NetRx[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (NET_RX%d): %w", ErrFileParse, count, i, err)
}
}
case "BLOCK:":
perCPU := parts[1:]
softirqs.Block = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.Block[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (BLOCK%d): %w", ErrFileParse, count, i, err)
}
}
case "IRQ_POLL:":
perCPU := parts[1:]
softirqs.IRQPoll = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.IRQPoll[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (IRQ_POLL%d): %w", ErrFileParse, count, i, err)
}
}
case "TASKLET:":
perCPU := parts[1:]
softirqs.Tasklet = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.Tasklet[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (TASKLET%d): %w", ErrFileParse, count, i, err)
}
}
case "SCHED:":
perCPU := parts[1:]
softirqs.Sched = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.Sched[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (SCHED%d): %w", ErrFileParse, count, i, err)
}
}
case "HRTIMER:":
perCPU := parts[1:]
softirqs.HRTimer = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.HRTimer[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (HRTIMER%d): %w", ErrFileParse, count, i, err)
}
}
case "RCU:":
perCPU := parts[1:]
softirqs.RCU = make([]uint64, len(perCPU))
for i, count := range perCPU {
if softirqs.RCU[i], err = strconv.ParseUint(count, 10, 64); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse %q (RCU%d): %w", ErrFileParse, count, i, err)
}
}
}
}
if err := scanner.Err(); err != nil {
return Softirqs{}, fmt.Errorf("%w: couldn't parse softirqs: %w", ErrFileParse, err)
}
return softirqs, scanner.Err()
}
|
