Fix Flaky Semaphore Test #166

Benchdiff Results

Benchmark Command: go test ./... -run ^ -bench . -count 5 -benchtime 100ms -cpu 1,2 -benchmem

HEAD sha: 5be0588

Base sha: 46f8e38

Degraded: false

pkg: github.com/elastic/apm-data/codec
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
Encode/format=json	27320	15%	26134.2	1%	~	(p=0.730 n=5+5)
Encode/format=json-2	13649.2	1%	13519.8	1%	-0.95%	(p=0.032 n=5+5)
Encode/format=vtproto	4741.6	1%	4758.4	0%	~	(p=0.135 n=5+5)
Encode/format=vtproto-2	2680.4	10%	2563.6	1%	~	(p=0.222 n=5+5)
Decode/format=json	123334	2%	125994	6%	~	(p=0.421 n=5+5)
Decode/format=json-2	65642.2	1%	65373.6	1%	~	(p=0.222 n=5+5)
Decode/format=vtproto	18560.6	5%	17719.8	1%	-4.53%	(p=0.008 n=5+5)
Decode/format=vtproto-2	11655.4	10%	10270.8	1%	-11.88%	(p=0.008 n=5+5)

name	old bytes/op (bytes/op)	±	new bytes/op (bytes/op)	±	delta	±
Encode/format=json	6564	0%	6564	0%	~	(all equal)
Encode/format=json-2	6564	0%	6564	0%	~	(all equal)
Encode/format=vtproto	2775	0%	2775	0%	~	(all equal)
Encode/format=vtproto-2	2775	0%	2775	0%	~	(all equal)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
Encode/format=json	7592	0%	7592	0%	~	(all equal)
Encode/format=json-2	7593	0%	7593	0%	~	(all equal)
Encode/format=vtproto	3072	0%	3072	0%	~	(all equal)
Encode/format=vtproto-2	3072	0%	3072	0%	~	(all equal)
Decode/format=json	14282	0%	14282.6	0%	~	(p=0.698 n=5+5)
Decode/format=json-2	14282	0%	14281.4	0%	~	(p=0.484 n=5+5)
Decode/format=vtproto	12952	0%	12952	0%	~	(all equal)
Decode/format=vtproto-2	12952	0%	12952	0%	~	(all equal)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
Encode/format=json	26	0%	26	0%	~	(all equal)
Encode/format=json-2	26	0%	26	0%	~	(all equal)
Encode/format=vtproto	1	0%	1	0%	~	(all equal)
Encode/format=vtproto-2	1	0%	1	0%	~	(all equal)
Decode/format=json	379	0%	379	0%	~	(all equal)
Decode/format=json-2	379	0%	379	0%	~	(all equal)
Decode/format=vtproto	348	0%	348	0%	~	(all equal)
Decode/format=vtproto-2	348	0%	348	0%	~	(all equal)

pkg: github.com/elastic/apm-data/input/elasticapm/internal/decoder
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
NDStreamDecoder	278.36	2%	274.82	4%	~	(p=0.421 n=5+5)
NDStreamDecoder-2	149.56	4%	144.8	3%	~	(p=0.095 n=5+5)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
NDStreamDecoder	72	0%	72	0%	~	(all equal)
NDStreamDecoder-2	72	0%	72	0%	~	(all equal)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
NDStreamDecoder	4	0%	4	0%	~	(all equal)
NDStreamDecoder-2	4	0%	4	0%	~	(all equal)

pkg: github.com/elastic/apm-data/model/modeljson
goos: linux
goarch: amd64

name	old time/op (ns/op)	±	new time/op (ns/op)	±	delta	±
APMEventToJSON/to-json	16627.8	11%	16215.2	12%	~	(p=0.548 n=5+5)
APMEventToJSON/to-json-2	13975.8	1%	13250.2	1%	-5.19%	(p=0.008 n=5+5)

name	old alloc/op (B/op)	±	new alloc/op (B/op)	±	delta	±
APMEventToJSON/to-json	2616	0%	2616	0%	~	(all equal)
APMEventToJSON/to-json-2	2616	0%	2616	0%	~	(all equal)

name	old allocs/op (allocs/op)	±	new allocs/op (allocs/op)	±	delta	±
APMEventToJSON/to-json	38	0%	38	0%	~	(all equal)
APMEventToJSON/to-json-2	38	0%	38	0%	~	(all equal)