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/*
* Copyright 2017, Google Inc.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.opencensus.trace;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;
/** Benchmarks for {@link SpanFactoryImpl} and {@link SpanImpl}. */
@State(Scope.Benchmark)
public class StartEndSpanBenchmark {
private static final Tracer tracer = Tracing.getTracer();
private static final String SPAN_NAME = "MySpanName";
private Span rootSpan =
tracer.spanBuilder(SPAN_NAME).becomeRoot().setSampler(Samplers.neverSample()).startSpan();
@TearDown
public void doTearDown() {
rootSpan.end();
}
/**
* This benchmark attempts to measure performance of start/end for a non-sampled root {@code
* Span}.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndNonSampledRootSpan() {
Span span =
tracer.spanBuilder(SPAN_NAME).becomeRoot().setSampler(Samplers.neverSample()).startSpan();
span.end();
return span;
}
/**
* This benchmark attempts to measure performance of start/end for a root {@code Span} with record
* events option.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndRecordEventsRootSpan() {
Span span =
tracer
.spanBuilder(SPAN_NAME)
.becomeRoot()
.setSampler(Samplers.neverSample())
.setRecordEvents(true)
.startSpan();
span.end();
return span;
}
/**
* This benchmark attempts to measure performance of start/end for a sampled root {@code Span}.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndSampledRootSpan() {
Span span = tracer.spanBuilder(SPAN_NAME).setSampler(Samplers.alwaysSample()).startSpan();
span.end();
return span;
}
/**
* This benchmark attempts to measure performance of start/end for a non-sampled child {@code
* Span}.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndNonSampledChildSpan() {
Span span =
tracer.spanBuilder(rootSpan, SPAN_NAME).setSampler(Samplers.neverSample()).startSpan();
span.end();
return span;
}
/**
* This benchmark attempts to measure performance of start/end for a child {@code Span} with
* record events option.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndRecordEventsChildSpan() {
Span span =
tracer
.spanBuilder(rootSpan, SPAN_NAME)
.setSampler(Samplers.neverSample())
.setRecordEvents(true)
.startSpan();
span.end();
return span;
}
/**
* This benchmark attempts to measure performance of start/end for a sampled child {@code Span}.
*/
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndSampledChildSpan() {
Span span =
tracer.spanBuilder(rootSpan, SPAN_NAME).setSampler(Samplers.alwaysSample()).startSpan();
span.end();
return span;
}
}
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