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 watchers
import (
"fmt"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/v16/internal/cgroups"
"gitlab.com/gitlab-org/gitaly/v16/internal/limiter"
"gitlab.com/gitlab-org/gitaly/v16/internal/testhelper"
)
func TestCgroupMemoryWatcher_Name(t *testing.T) {
t.Parallel()
manager := NewCgroupMemoryWatcher(&testCgroupManager{})
require.Equal(t, cgroupMemoryWatcherName, manager.Name())
}
func TestCgroupMemoryWatcher_Poll(t *testing.T) {
t.Parallel()
for _, tc := range []struct {
desc string
manager *testCgroupManager
expectedEvent *limiter.BackoffEvent
expectedErr error
}{
{
desc: "disabled watcher",
manager: &testCgroupManager{ready: false},
expectedEvent: &limiter.BackoffEvent{
WatcherName: cgroupMemoryWatcherName,
ShouldBackoff: false,
},
expectedErr: nil,
},
{
desc: "cgroup stats return empty stats",
manager: &testCgroupManager{
ready: true,
statsList: []cgroups.Stats{{}},
},
expectedEvent: &limiter.BackoffEvent{
WatcherName: cgroupMemoryWatcherName,
ShouldBackoff: false,
},
},
{
desc: "cgroup stats query returns errors",
manager: &testCgroupManager{
ready: true,
statsErr: fmt.Errorf("something goes wrong"),
statsList: []cgroups.Stats{{}},
},
expectedErr: fmt.Errorf("cgroup watcher: poll stats from cgroup manager: %w", fmt.Errorf("something goes wrong")),
},
{
desc: "cgroup memory usage is more than 90%",
manager: &testCgroupManager{
ready: true,
statsList: []cgroups.Stats{
{
ParentStats: cgroups.CgroupStats{
MemoryUsage: 1800000000,
MemoryLimit: 2000000000,
},
},
},
},
expectedEvent: &limiter.BackoffEvent{
WatcherName: cgroupMemoryWatcherName,
ShouldBackoff: true,
Reason: "cgroup memory exceeds limit: 1800000000/2000000000",
},
expectedErr: nil,
},
{
desc: "cgroup is under OOM",
manager: &testCgroupManager{
ready: true,
statsList: []cgroups.Stats{
{
ParentStats: cgroups.CgroupStats{
MemoryUsage: 1900000000,
MemoryLimit: 2000000000,
UnderOOM: true,
},
},
},
},
expectedEvent: &limiter.BackoffEvent{
WatcherName: cgroupMemoryWatcherName,
ShouldBackoff: true,
Reason: "cgroup is under OOM",
},
expectedErr: nil,
},
{
desc: "cgroup memory usage normal",
manager: &testCgroupManager{
ready: true,
statsList: []cgroups.Stats{
{
ParentStats: cgroups.CgroupStats{
MemoryUsage: 1700000000,
MemoryLimit: 2000000000,
},
},
},
},
expectedEvent: &limiter.BackoffEvent{
WatcherName: cgroupMemoryWatcherName,
ShouldBackoff: false,
},
expectedErr: nil,
},
} {
t.Run(tc.desc, func(t *testing.T) {
watcher := NewCgroupMemoryWatcher(tc.manager)
event, err := watcher.Poll(testhelper.Context(t))
if tc.expectedErr != nil {
require.Equal(t, tc.expectedErr, err)
require.Nil(t, event)
} else {
require.NoError(t, err)
require.Equal(t, tc.expectedEvent, event)
}
})
}
}
|
