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Fix broadcast benchmarks #542

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merged 2 commits into from Jan 2, 2022
Merged

Fix broadcast benchmarks #542

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a4b10e3
do not use cached PreparedMessage in broadcast benchmarks
Sep 21, 2019
8c21f58
pick better name for benchmark method
Sep 21, 2019
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29 changes: 14 additions & 15 deletions conn_broadcast_test.go
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Expand Up @@ -18,7 +18,6 @@ import (
// scenarios with many subscribers in one channel.
type broadcastBench struct {
w io.Writer
message *broadcastMessage
closeCh chan struct{}
doneCh chan struct{}
count int32
Expand Down Expand Up @@ -52,14 +51,6 @@ func newBroadcastBench(usePrepared, compression bool) *broadcastBench {
usePrepared: usePrepared,
compression: compression,
}
msg := &broadcastMessage{
payload: textMessages(1)[0],
}
if usePrepared {
pm, _ := NewPreparedMessage(TextMessage, msg.payload)
msg.prepared = pm
}
bench.message = msg
bench.makeConns(10000)
return bench
}
Expand All @@ -78,7 +69,7 @@ func (b *broadcastBench) makeConns(numConns int) {
for {
select {
case msg := <-c.msgCh:
if b.usePrepared {
if msg.prepared != nil {
c.conn.WritePreparedMessage(msg.prepared)
} else {
c.conn.WriteMessage(TextMessage, msg.payload)
Expand All @@ -100,9 +91,9 @@ func (b *broadcastBench) close() {
close(b.closeCh)
}

func (b *broadcastBench) runOnce() {
func (b *broadcastBench) broadcastOnce(msg *broadcastMessage) {
for _, c := range b.conns {
c.msgCh <- b.message
c.msgCh <- msg
}
<-b.doneCh
}
Expand All @@ -114,17 +105,25 @@ func BenchmarkBroadcast(b *testing.B) {
compression bool
}{
{"NoCompression", false, false},
{"WithCompression", false, true},
{"Compression", false, true},
{"NoCompressionPrepared", true, false},
{"WithCompressionPrepared", true, true},
{"CompressionPrepared", true, true},
}
payload := textMessages(1)[0]
for _, bm := range benchmarks {
b.Run(bm.name, func(b *testing.B) {
bench := newBroadcastBench(bm.usePrepared, bm.compression)
defer bench.close()
b.ResetTimer()
for i := 0; i < b.N; i++ {
bench.runOnce()
message := &broadcastMessage{
payload: payload,
}
if bench.usePrepared {
pm, _ := NewPreparedMessage(TextMessage, message.payload)
message.prepared = pm
}
bench.broadcastOnce(message)
}
b.ReportAllocs()
})
Expand Down