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
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include "opentelemetry/exporters/memory/in_memory_span_exporter.h"
#include "opentelemetry/sdk/resource/resource.h"
#include "opentelemetry/sdk/trace/sampler.h"
#include "opentelemetry/sdk/trace/samplers/always_off.h"
#include "opentelemetry/sdk/trace/samplers/always_on.h"
#include "opentelemetry/sdk/trace/samplers/parent.h"
#include "opentelemetry/sdk/trace/samplers/trace_id_ratio.h"
#include "opentelemetry/sdk/trace/simple_processor.h"
#include "opentelemetry/sdk/trace/span_data.h"
#include "opentelemetry/sdk/trace/tracer.h"
#include <cstdint>
#include <benchmark/benchmark.h>
using namespace opentelemetry::sdk::trace;
using opentelemetry::exporter::memory::InMemorySpanExporter;
using opentelemetry::trace::SpanContext;
namespace
{
// Sampler constructor used as a baseline to compare with other samplers
void BM_AlwaysOffSamplerConstruction(benchmark::State &state)
{
while (state.KeepRunning())
{
benchmark::DoNotOptimize(AlwaysOffSampler());
}
}
BENCHMARK(BM_AlwaysOffSamplerConstruction);
// Sampler constructor used as a baseline to compare with other samplers
void BM_AlwaysOnSamplerConstruction(benchmark::State &state)
{
while (state.KeepRunning())
{
benchmark::DoNotOptimize(AlwaysOnSampler());
}
}
BENCHMARK(BM_AlwaysOnSamplerConstruction);
void BM_ParentBasedSamplerConstruction(benchmark::State &state)
{
while (state.KeepRunning())
{
benchmark::DoNotOptimize(ParentBasedSampler(std::make_shared<AlwaysOnSampler>()));
}
}
BENCHMARK(BM_ParentBasedSamplerConstruction);
void BM_TraceIdRatioBasedSamplerConstruction(benchmark::State &state)
{
while (state.KeepRunning())
{
benchmark::DoNotOptimize(TraceIdRatioBasedSampler(0.01));
}
}
BENCHMARK(BM_TraceIdRatioBasedSamplerConstruction);
// Sampler Helper Function
void BenchmarkShouldSampler(Sampler &sampler, benchmark::State &state)
{
opentelemetry::trace::TraceId trace_id;
opentelemetry::trace::SpanKind span_kind = opentelemetry::trace::SpanKind::kInternal;
using M = std::map<std::string, int>;
M m1 = {{}};
using L = std::vector<std::pair<trace_api::SpanContext, std::map<std::string, std::string>>>;
L l1 = {{trace_api::SpanContext(false, false), {}}, {trace_api::SpanContext(false, false), {}}};
opentelemetry::common::KeyValueIterableView<M> view{m1};
trace_api::SpanContextKeyValueIterableView<L> links{l1};
while (state.KeepRunning())
{
auto invalid_ctx = SpanContext::GetInvalid();
benchmark::DoNotOptimize(
sampler.ShouldSample(invalid_ctx, trace_id, "", span_kind, view, links));
}
}
// Sampler used as a baseline to compare with other samplers
void BM_AlwaysOffSamplerShouldSample(benchmark::State &state)
{
AlwaysOffSampler sampler;
BenchmarkShouldSampler(sampler, state);
}
BENCHMARK(BM_AlwaysOffSamplerShouldSample);
// Sampler used as a baseline to compare with other samplers
void BM_AlwaysOnSamplerShouldSample(benchmark::State &state)
{
AlwaysOnSampler sampler;
BenchmarkShouldSampler(sampler, state);
}
BENCHMARK(BM_AlwaysOnSamplerShouldSample);
void BM_ParentBasedSamplerShouldSample(benchmark::State &state)
{
ParentBasedSampler sampler(std::make_shared<AlwaysOnSampler>());
BenchmarkShouldSampler(sampler, state);
}
BENCHMARK(BM_ParentBasedSamplerShouldSample);
void BM_TraceIdRatioBasedSamplerShouldSample(benchmark::State &state)
{
TraceIdRatioBasedSampler sampler(0.01);
BenchmarkShouldSampler(sampler, state);
}
BENCHMARK(BM_TraceIdRatioBasedSamplerShouldSample);
// Sampler Helper Function
void BenchmarkSpanCreation(std::shared_ptr<Sampler> sampler, benchmark::State &state)
{
std::unique_ptr<SpanExporter> exporter(new InMemorySpanExporter());
std::unique_ptr<SpanProcessor> processor(new SimpleSpanProcessor(std::move(exporter)));
std::vector<std::unique_ptr<SpanProcessor>> processors;
processors.push_back(std::move(processor));
auto context = std::make_shared<TracerContext>(std::move(processors));
auto resource = opentelemetry::sdk::resource::Resource::Create({});
auto tracer = std::shared_ptr<opentelemetry::trace::Tracer>(new Tracer(context));
while (state.KeepRunning())
{
auto span = tracer->StartSpan("span");
span->SetAttribute("attr1", 3.1);
span->End();
}
}
// Test to measure performance for span creation
void BM_SpanCreation(benchmark::State &state)
{
BenchmarkSpanCreation(std::move(std::make_shared<AlwaysOnSampler>()), state);
}
BENCHMARK(BM_SpanCreation);
// Test to measure performance overhead for no-op span creation
void BM_NoopSpanCreation(benchmark::State &state)
{
BenchmarkSpanCreation(std::move(std::make_shared<AlwaysOffSampler>()), state);
}
BENCHMARK(BM_NoopSpanCreation);
} // namespace
BENCHMARK_MAIN();
|
