forked from dunglas/mercure
-
Notifications
You must be signed in to change notification settings - Fork 0
/
subscriber_bench_test.go
178 lines (151 loc) · 4.41 KB
/
subscriber_bench_test.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
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
package mercure
import (
"context"
"fmt"
"math/rand"
"os"
"strconv"
"strings"
"sync"
"testing"
"go.uber.org/zap"
)
func subscribeBenchmarkHelper(b *testing.B, subBench func(b *testing.B, topics, concurrency, matchPct int, testName string)) {
b.Helper()
var str []string
// How many topics and topicselectors do each subscriber and update contain (same value for both)
topicOpts := []int{1, 5, 10}
if opt := os.Getenv("SUB_TEST_TOPICS"); len(opt) > 0 {
topicOpts = []int{strInt(opt)}
} else {
str = append(str, "topics %d")
}
// How many concurrent subscribers
concurrencyOpts := []int{100, 1000, 5000, 20000}
if opt := os.Getenv("SUB_TEST_CONCURRENCY"); len(opt) > 0 {
concurrencyOpts = []int{strInt(opt)}
} else {
str = append(str, "concurrency %d")
}
// What percentage of messages are delivered to a subscriber (ie 10 = 10% CanDispatch true)
matchPctOpts := []int{1, 10, 100}
if opt := os.Getenv("SUB_TEST_MATCHPCT"); len(opt) > 0 {
matchPctOpts = []int{strInt(opt)}
} else {
str = append(str, "matchpct %d")
}
var arg []interface{}
for _, topics := range topicOpts {
arg := arg
if len(topicOpts) > 1 {
arg = append(arg, topics)
}
for _, concurrency := range concurrencyOpts {
arg := arg
if len(concurrencyOpts) > 1 {
arg = append(arg, concurrency)
}
for _, matchPct := range matchPctOpts {
arg := arg
if len(matchPctOpts) > 1 {
arg = append(arg, matchPct)
}
subBench(b,
topics,
concurrency,
matchPct,
fmt.Sprintf(strings.Join(str, " "), arg...),
)
}
}
}
}
func BenchmarkSubscriber(b *testing.B) {
subscribeBenchmarkHelper(b, subBenchSubscriber)
}
func strInt(s string) int {
n, err := strconv.Atoi(s)
if err != nil {
panic(err)
}
return n
}
func subBenchSubscriber(b *testing.B, topics, concurrency, matchPct int, testName string) {
b.Helper()
s := NewSubscriber("0e249241-6432-4ce1-b9b9-5d170163c253", zap.NewNop(), &TopicSelectorStore{})
ts := make([]string, topics)
tsMatch := make([]string, topics)
tsNoMatch := make([]string, topics)
for i := 0; i < topics; i++ {
ts[i] = fmt.Sprintf("/%d/{%d}", rand.Int(), rand.Int()) //nolint:gosec
tsNoMatch[i] = fmt.Sprintf("/%d/%d", rand.Int(), rand.Int()) //nolint:gosec
if topics/2 == i {
// Insert matching topic half way through matching topic list to simulate match
tsMatch[i] = strings.ReplaceAll(strings.ReplaceAll(ts[i], "{", ""), "}", "")
} else {
tsMatch[i] = tsNoMatch[i]
}
}
s.SetTopics(ts, nil)
defer s.Disconnect()
ctx, done := context.WithCancel(context.Background())
defer done()
for i := 0; i < 1; i++ {
go func() {
for {
select {
case <-s.out:
case <-ctx.Done():
return
}
}
}()
}
b.SetParallelism(concurrency)
b.Run(testName, func(b *testing.B) {
var wg sync.WaitGroup
wg.Add(concurrency)
b.RunParallel(func(pb *testing.PB) {
for i := 0; pb.Next(); i++ {
if i%100 < matchPct {
s.Dispatch(&Update{Topics: tsMatch}, i%2 == 0 /* half history, half live */)
} else {
s.Dispatch(&Update{Topics: tsNoMatch}, i%2 == 0 /* half history, half live */)
}
}
})
wg.Done()
})
}
/* --- test.sh ---
These are example commands that can be used to run subsets of this test for analysis.
Omission of any environment variable causes the test to enumate a few meaningful options.
#!/usr/bin/sh
set -e
mkdir -p _dist
# --- Generating a diff ---
SUB_TEST_CONCURRENCY=5000 \
SUB_TEST_SKIPSELECT=false \
SUB_TEST_CACHE=ristretto \
SUB_TEST_SHARDS=256 \
go test -bench=. -run=BenchmarkSubscriber -benchmem -count 5 | tee _dist/output.5kc.noskip.ristretto.256.txt
SUB_TEST_CONCURRENCY=5000 \
SUB_TEST_SKIPSELECT=true \
SUB_TEST_CACHE=lru \
SUB_TEST_SHARDS=256 \
go test -bench=. -run=BenchmarkSubscriber -benchmem -count 5 | tee _dist/output.5kc.skip.lru.256.txt
benchstat _dist/output.5kc.noskip.ristretto.256.txt \
_dist/output.5kc.skip.lru.256.txt \
> _dist/diff-cache.5kc.256.txt
# --- Generating a cpu call graph ---
SUB_TEST_CONCURRENCY=20000 \
SUB_TEST_TOPICS=20 \
SUB_TEST_MATCHPCT=50 \
SUB_TEST_SKIPSELECT=false \
SUB_TEST_CACHE=ristretto \
SUB_TEST_SHARDS=256 \
go test -bench=. -run=BenchmarkSubscriber -cpuprofile _dist/profile.20kc.20top.50pct.noskip.ristretto.256sh.out -benchmem
go build -o _dist/bin
go tool pprof --pdf _dist/bin _dist/profile.20kc.20top.50pct.noskip.ristretto.256sh.out \
> _dist/profile.20kc.20top.50pct.noskip.ristretto.256sh.pdf
*/