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
|
package dashboard
import (
"fmt"
"ior/internal/statsengine"
"sort"
"strconv"
"time"
"github.com/charmbracelet/bubbles/table"
)
func renderSyscalls(snap *statsengine.Snapshot, width, height int) string {
return renderSyscallsWithOffset(snap, width, height, 0)
}
func renderSyscallsWithOffset(snap *statsengine.Snapshot, width, height, offset int) string {
if snap == nil {
return "Syscalls: waiting for stats..."
}
rows := syscallRows(snap.Syscalls())
if len(rows) == 0 {
return "Syscalls: no data"
}
columns := []table.Column{
{Title: "Syscall", Width: 16},
{Title: "Count", Width: 8},
{Title: "Rate/s", Width: 8},
{Title: "Avg", Width: 9},
{Title: "Min", Width: 9},
{Title: "Max", Width: 9},
{Title: "p50", Width: 9},
{Title: "p95", Width: 9},
{Title: "p99", Width: 9},
{Title: "Bytes", Width: 10},
{Title: "Errors", Width: 8},
}
tbl := table.New(
table.WithColumns(columns),
table.WithRows(rows),
table.WithFocused(true),
)
tbl.SetHeight(syscallTableHeight(height))
tbl.SetWidth(tableWidth(width))
tbl.SetCursor(clampOffset(offset, len(rows)))
return tbl.View()
}
func syscallRows(syscalls []statsengine.SyscallSnapshot) []table.Row {
ordered := append([]statsengine.SyscallSnapshot(nil), syscalls...)
sort.SliceStable(ordered, func(i, j int) bool {
if ordered[i].Count == ordered[j].Count {
return ordered[i].Name < ordered[j].Name
}
return ordered[i].Count > ordered[j].Count
})
rows := make([]table.Row, 0, len(ordered))
for _, s := range ordered {
rows = append(rows, table.Row{
s.Name,
strconv.FormatUint(s.Count, 10),
fmt.Sprintf("%.1f", s.RatePerSec),
formatDurationNs(s.LatencyMeanNs),
formatDurationUintNs(s.LatencyMinNs),
formatDurationUintNs(s.LatencyMaxNs),
formatDurationUintNs(s.LatencyP50Ns),
formatDurationUintNs(s.LatencyP95Ns),
formatDurationUintNs(s.LatencyP99Ns),
formatBytes(float64(s.Bytes)),
strconv.FormatUint(s.Errors, 10),
})
}
return rows
}
func formatDurationUintNs(v uint64) string {
return formatDurationNs(float64(v))
}
func formatDurationNs(v float64) string {
if v < 1000 {
return fmt.Sprintf("%.0fns", v)
}
us := v / 1000
if us < 1000 {
return fmt.Sprintf("%.1fµs", us)
}
ms := us / 1000
if ms < 1000 {
return fmt.Sprintf("%.1fms", ms)
}
s := ms / 1000
return (time.Duration(s * float64(time.Second))).String()
}
func syscallTableHeight(height int) int {
if height <= 0 {
return 10
}
h := height - 6
if h < 5 {
return 5
}
return h
}
func tableWidth(width int) int {
if width <= 0 {
return 80
}
if width < 60 {
return 60
}
return width
}
func clampOffset(offset, size int) int {
if size == 0 {
return 0
}
if offset < 0 {
return 0
}
if offset >= size {
return size - 1
}
return offset
}
|
