java类org.openjdk.jmh.annotations.Warmup的实例源码

private void generateImport(PrintWriter writer) {
    Class<?>[] imports = new Class<?>[]{
            List.class, AtomicInteger.class,
            Collection.class, ArrayList.class,
            TimeUnit.class, Generated.class, CompilerControl.class,
            InfraControl.class, ThreadParams.class,
            Result.class, ThroughputResult.class, AverageTimeResult.class,
            SampleTimeResult.class, SingleShotResult.class, SampleBuffer.class,
            Mode.class, Fork.class, Measurement.class, Threads.class, Warmup.class,
            BenchmarkMode.class, RawResults.class, ResultRole.class,
            Field.class, BenchmarkParams.class, IterationParams.class
    };

    for (Class<?> c : imports) {
        writer.println("import " + c.getName() + ';');
    }
    writer.println();
}

@Benchmark
@Warmup(iterations = 5, time = 1)
@Measurement(iterations = 5, time = 1)
@BenchmarkMode(Mode.AverageTime)
public List<String> measureWrong_1() {
    list.add(list.size() / 2, "something");
    return list;
}

@Benchmark
@Warmup(iterations = 5, time = 5)
@Measurement(iterations = 5, time = 5)
@BenchmarkMode(Mode.AverageTime)
public List<String> measureWrong_5() {
    list.add(list.size() / 2, "something");
    return list;
}

@Benchmark
@Warmup(iterations = 5, batchSize = 5000)
@Measurement(iterations = 5, batchSize = 5000)
@BenchmarkMode(Mode.SingleShotTime)
public List<String> measureRight() {
    list.add(list.size() / 2, "something");
    return list;
}

@Benchmark
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@Fork(value = 1)
@Threads(1)
@Warmup(iterations = 5)
@Measurement(iterations = 20)
public void testCascadedValidation(ParsingBeansSpeedState state, Blackhole bh) {
    // Validator in new factory

    for ( Object o : state.holder.beans ) {
        bh.consume( state.validator.getConstraintsForClass( o.getClass() ).isBeanConstrained() );
    }
}

@Benchmark
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
@Fork(value = 1)
@Threads(50)
@Warmup(iterations = 20) // it seems that as there are a lot of beans it takes some time to warmup
@Measurement(iterations = 30)
public void testCascadedValidation(RawValidationSpeedState state, Blackhole bh) {
    for ( Object o : state.holder.beans ) {
        Set<ConstraintViolation<Object>> constraintViolations = state.validator.validate( o );
        bh.consume( constraintViolations );
    }
}

@Benchmark
@Warmup(iterations = 20)
public int getAndIncAge(ThreadState state) {
    Person person = state.person;
    int oldAge = person.getAge();
    person.setAge(oldAge + 1);
    return oldAge;
}

@Benchmark
@Warmup(iterations = 20)
public void addBoxedAndClear(ThreadState state) {
    for (int i = 0; i < N; ++i) {
        state.list.add(i);
    }
    state.list.clear();
}

@Benchmark
@Warmup(iterations = 20)
public void addNullAndClear(ThreadState state) {
    for (int i = 0; i < N; ++i) {
        state.list.add(null);
    }
    state.list.clear();
}

@Benchmark
@Warmup(iterations = 20)
public void addNull(ClearedThreadState state) {
    for (int i = 0; i < N; ++i) {
        state.list.add(null);
    }
}

@Benchmark
@Warmup(iterations = 20)
public void addBoxed(ThreadState state) {
    for (int i = 0; i < N; ++i) {
        state.list.put(i, i);
    }
}

@Benchmark
@Warmup(iterations = 20)
public int hash(ThreadState state) {
    int value = 0;
    char[] array = state.characters;
    for (int i = 0; i < array.length; ++i) {
        value = value * 31 + array[i];
    }
    return value;
}

@Benchmark
@Warmup(iterations = 5)
public void mathLog(ThreadState state) {
    double[] data = state.data;
    for (int i = 0; i < data.length; i++) {
        double[] result = state.result;
        result[i] = Math.log(data[i]);
    }
}

@Benchmark
@Warmup(iterations = 5)
public void mathLog10(ThreadState state) {
    double[] data = state.data;
    for (int i = 0; i < data.length; i++) {
        double[] result = state.result;
        result[i] = Math.log10(data[i]);
    }
}

@Benchmark
@Warmup(iterations = 5)
public void mathSin(ThreadState state) {
    double[] data = state.data;
    for (int i = 0; i < data.length; i++) {
        double[] result = state.result;
        result[i] = Math.sin(data[i]);
    }
}

@Benchmark
@Warmup(iterations = 5)
public void mathCos(ThreadState state) {
    double[] data = state.data;
    for (int i = 0; i < data.length; i++) {
        double[] result = state.result;
        result[i] = Math.cos(data[i]);
    }
}

@Benchmark
@Warmup(iterations = 5)
public void mathTan(ThreadState state) {
    double[] data = state.data;
    for (int i = 0; i < data.length; i++) {
        double[] result = state.result;
        result[i] = Math.tan(data[i]);
    }
}

@Benchmark
@Warmup(iterations = 20)
public int getNodeClass(StringEquals s) {
    int sum = 0;
    for (Node n : s.nodes) {
        sum += n.getNodeClass().iterableId();
    }
    return sum;
}

@Benchmark
@Warmup(iterations = 20)
public int valueEquals_STRING_EQUALS(StringEquals s) {
    int result = 0;
    for (NodePair np : s.valueEqualsNodePairs) {
        if (np.n1.valueEquals(np.n2)) {
            result += 27;
        } else {
            result += 31;
        }
    }
    return result;
}

@Benchmark
@Warmup(iterations = 20)
public int valueEquals_HASHMAP_COMPUTE_IF_ABSENT(HashMapComputeIfAbsent s) {
    int result = 0;
    for (NodePair np : s.valueEqualsNodePairs) {
        if (np.n1.valueEquals(np.n2)) {
            result += 27;
        } else {
            result += 31;
        }
    }
    return result;
}

@Benchmark
@Warmup(iterations = 20)
public int valueNumberLeaf_HASHMAP_COMPUTE_IF_ABSENT(HashMapComputeIfAbsent s) {
    int result = 0;
    for (Node n : s.valueNumberableLeafNodes) {
        result += (n.getNodeClass().isLeafNode() ? 1 : 0);
    }
    return result;
}

@Benchmark
@Warmup(iterations = 20)
public int valueNumberLeaf_STRING_EQUALS(StringEquals s) {
    int result = 0;
    for (Node n : s.valueNumberableLeafNodes) {
        result += (n.getNodeClass().isLeafNode() ? 1 : 0);
    }
    return result;
}

@Warmup(iterations = 20)
@Measurement(iterations = 10)
@Benchmark
public void sortNewWay() {
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        SortingLongTestJMH.sort(this.array, 0, this.array.length - 1, null, 0, 0);
    }
}

@Warmup(iterations = 20)
@Measurement(iterations = 10)
@Benchmark
public void sortOldWay() {
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        Arrays.sort(this.array);
    }
}

@Warmup(iterations = 20)
@Measurement(iterations = 10)
@Benchmark
public void sortNewWay() {
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        SortingIntTestJMH.sort(this.array, 0, this.array.length - 1, null, 0, 0);
    }
}

@Warmup(iterations = 20)
@Measurement(iterations = 10)
@Benchmark
public void sortCurrentWay() {
    for (int i = 0; i < NUMBER_OF_ITERATIONS; i++) {
        Arrays.sort(this.array);
    }
}

@Benchmark
@Warmup(iterations = WARMUP_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = MEASUREMENT_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
public void write100KSingleNodeWithOneInnerItemInOneCommitBenchmark() throws Exception {
    DOMStoreReadWriteTransaction writeTx = domStore.newReadWriteTransaction();
    for (int outerListKey = 0; outerListKey < OUTER_LIST_100K; ++outerListKey) {
        writeTx.write(OUTER_LIST_100K_PATHS[outerListKey], OUTER_LIST_ONE_ITEM_INNER_LIST[outerListKey]);
    }
    DOMStoreThreePhaseCommitCohort cohort = writeTx.ready();
    cohort.canCommit().get();
    cohort.preCommit().get();
    cohort.commit().get();
}

@Benchmark
@Warmup(iterations = WARMUP_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = MEASUREMENT_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
public void write100KSingleNodeWithOneInnerItemInCommitPerWriteBenchmark() throws Exception {
    for (int outerListKey = 0; outerListKey < OUTER_LIST_100K; ++outerListKey) {
        DOMStoreReadWriteTransaction writeTx = domStore.newReadWriteTransaction();
        writeTx.write(OUTER_LIST_100K_PATHS[outerListKey], OUTER_LIST_ONE_ITEM_INNER_LIST[outerListKey]);

        DOMStoreThreePhaseCommitCohort cohort = writeTx.ready();
        cohort.canCommit().get();
        cohort.preCommit().get();
        cohort.commit().get();
    }
}

@Benchmark
@Warmup(iterations = WARMUP_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = MEASUREMENT_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
public void write50KSingleNodeWithTwoInnerItemsInOneCommitBenchmark() throws Exception {
    DOMStoreReadWriteTransaction writeTx = domStore.newReadWriteTransaction();
    for (int outerListKey = 0; outerListKey < OUTER_LIST_50K; ++outerListKey) {
        writeTx.write(OUTER_LIST_50K_PATHS[outerListKey], OUTER_LIST_TWO_ITEM_INNER_LIST[outerListKey]);
    }
    DOMStoreThreePhaseCommitCohort cohort = writeTx.ready();
    cohort.canCommit().get();
    cohort.preCommit().get();
    cohort.commit().get();
}

@Benchmark
@Warmup(iterations = WARMUP_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = MEASUREMENT_ITERATIONS, timeUnit = TimeUnit.MILLISECONDS)
public void write50KSingleNodeWithTwoInnerItemsInCommitPerWriteBenchmark() throws Exception {
    for (int outerListKey = 0; outerListKey < OUTER_LIST_50K; ++outerListKey) {
        DOMStoreReadWriteTransaction writeTx = domStore.newReadWriteTransaction();
        writeTx.write(OUTER_LIST_50K_PATHS[outerListKey], OUTER_LIST_TWO_ITEM_INNER_LIST[outerListKey]);
        DOMStoreThreePhaseCommitCohort cohort = writeTx.ready();
        cohort.canCommit().get();
        cohort.preCommit().get();
        cohort.commit().get();
    }
}