benchmarks/src/main/java/org/lmdbjava/bench/LmdbJni.java at master · lmdbjava/benchmarks · GitHub

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* 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 org.lmdbjava.bench;

import static java.lang.Boolean.TRUE;

import static java.lang.System.setProperty;

import static java.nio.ByteBuffer.allocateDirect;

import static java.util.concurrent.TimeUnit.MILLISECONDS;

import static org.fusesource.lmdbjni.DirectBuffer.DISABLE_BOUNDS_CHECKS_PROP_NAME;

import static org.lmdbjava.MaskedFlag.mask;

import static org.lmdbjava.bench.CommonLmdbJava.POSIX_MODE;

import static org.lmdbjava.bench.CommonLmdbJava.dbiFlags;

import static org.lmdbjava.bench.CommonLmdbJava.envFlags;

import static org.lmdbjava.bench.CommonLmdbJava.mapSize;

import static org.openjdk.jmh.annotations.Level.Invocation;

import static org.openjdk.jmh.annotations.Level.Trial;

import static org.openjdk.jmh.annotations.Mode.SampleTime;

import static org.openjdk.jmh.annotations.Scope.Benchmark;

import java.io.IOException;

import net.jpountz.xxhash.StreamingXXHash64;

import net.jpountz.xxhash.XXHashFactory;

import org.fusesource.lmdbjni.BufferCursor;

import org.fusesource.lmdbjni.Database;

import org.fusesource.lmdbjni.DirectBuffer;

import org.fusesource.lmdbjni.Env;

import org.fusesource.lmdbjni.Transaction;

import org.lmdbjava.DbiFlags;

import org.lmdbjava.EnvFlags;

import org.openjdk.jmh.annotations.Benchmark;

import org.openjdk.jmh.annotations.BenchmarkMode;

import org.openjdk.jmh.annotations.Fork;

import org.openjdk.jmh.annotations.Measurement;

import org.openjdk.jmh.annotations.OutputTimeUnit;

import org.openjdk.jmh.annotations.Param;

import org.openjdk.jmh.annotations.Setup;

import org.openjdk.jmh.annotations.State;

import org.openjdk.jmh.annotations.TearDown;

import org.openjdk.jmh.annotations.Warmup;

import org.openjdk.jmh.infra.BenchmarkParams;

import org.openjdk.jmh.infra.Blackhole;

@OutputTimeUnit(MILLISECONDS)

@Fork(1)

@Warmup(iterations = 3)

@Measurement(iterations = 3)

@BenchmarkMode(SampleTime)

public class LmdbJni {

@Benchmark

public void readCrc(final Reader r, final Blackhole bh) {

r.crc.reset();

bh.consume(r.c.first());

do {

r.c.keyBuffer().getBytes(0, r.keyBytes, 0, r.keySize);

r.c.valBuffer().getBytes(0, r.valBytes, 0, r.valSize);

r.crc.update(r.keyBytes);

r.crc.update(r.valBytes);

} while (r.c.next());

bh.consume(r.crc.getValue());

}

@Benchmark

public void readKey(final Reader r, final Blackhole bh) {

for (final int key : r.keys) {

if (r.intKey) {

r.wkb.putInt(0, key);

} else {

r.wkb.putStringWithoutLengthUtf8(0, r.padKey(key));

}

r.c.keyWrite(r.wkb);

bh.consume(r.c.seekKey());

bh.consume(r.c.valBuffer());

}

@Benchmark

public void readRev(final Reader r, final Blackhole bh) {

bh.consume(r.c.last());

do {

bh.consume(r.c.valBuffer());

} while (r.c.prev());

}

@Benchmark

public void readSeq(final Reader r, final Blackhole bh) {

bh.consume(r.c.first());

do {

bh.consume(r.c.valBuffer());

} while (r.c.next());

}

@Benchmark

public void readXxh64(final Reader r, final Blackhole bh) {

r.xxh.reset();

bh.consume(r.c.first());

do {

r.c.keyBuffer().getBytes(0, r.keyBytes, 0, r.keySize);

r.c.valBuffer().getBytes(0, r.valBytes, 0, r.valSize);

r.xxh.update(r.keyBytes, 0, r.keySize);

r.xxh.update(r.valBytes, 0, r.valSize);

} while (r.c.next());

bh.consume(r.xxh.getValue());

}

@Benchmark

public void write(final Writer w, final Blackhole bh) {

w.write();

}

@State(value = Benchmark)

public static class CommonLmdbJni extends Common {

Database db;

Env env;

/**

* CRC scratch (memory-mapped MDB can't return a byte[] or ByteBuffer).

byte[] keyBytes;

/**

* CRC scratch (memory-mapped MDB can't return a byte[] or ByteBuffer).

byte[] valBytes;

/**

* CRC scratch (memory-mapped MDB can't return a byte[] or ByteBuffer).

DirectBuffer wkb;

/**

* Whether {@link EnvFlags#MDB_WRITEMAP} is used.

@Param("true")

boolean writeMap;

/**

* Writable value buffer.

DirectBuffer wvb;

static {

setProperty(DISABLE_BOUNDS_CHECKS_PROP_NAME, TRUE.toString());

}

public void setup(final BenchmarkParams b, final boolean sync) throws

IOException {

super.setup(b);

wkb = new DirectBuffer(allocateDirect(keySize));

wvb = new DirectBuffer(allocateDirect(valSize));

keyBytes = new byte[keySize];

valBytes = new byte[valSize];

final EnvFlags[] envFlags = envFlags(writeMap, sync);

env = new Env();

env.setMapSize(mapSize(num, valSize));

env.setMaxDbs(1);

env.setMaxReaders(2);

env.open(tmp.getAbsolutePath(), mask(envFlags), POSIX_MODE);

try (Transaction tx = env.createWriteTransaction()) {

final DbiFlags[] flags = dbiFlags(intKey);

db = env.openDatabase(tx, "db", mask(flags));

tx.commit();

}

@Override

public void teardown() throws IOException {

reportSpaceBeforeClose();

env.close();

super.teardown();

}

void write() {

try (Transaction tx = env.createWriteTransaction()) {

try (BufferCursor c = db.bufferCursor(tx);) {

final int rndByteMax = RND_MB.length - valSize;

int rndByteOffset = 0;

for (final int key : keys) {

if (intKey) {

wkb.putInt(0, key);

} else {

wkb.putStringWithoutLengthUtf8(0, padKey(key));

}

if (valRandom) {

wvb.putBytes(0, RND_MB, rndByteOffset, valSize);

rndByteOffset += valSize;

if (rndByteOffset >= rndByteMax) {

rndByteOffset = 0;

}

} else {

wvb.putInt(0, key);

}

c.keyWrite(wkb);

c.valWrite(wvb);

if (sequential) {

c.append();

} else {

c.overwrite();

}

tx.commit();

}

@State(Benchmark)

public static class Reader extends CommonLmdbJni {

BufferCursor c;

Transaction tx;

StreamingXXHash64 xxh;

@Setup(Trial)

@Override

public void setup(final BenchmarkParams b) throws IOException {

super.setup(b, false);

super.write();

tx = env.createReadTransaction();

c = db.bufferCursor(tx);

xxh = XXHashFactory.fastestJavaInstance().newStreamingHash64(0);

}

@TearDown(Trial)

@Override

public void teardown() throws IOException {

c.close();

tx.abort();

super.teardown();

}

@State(Benchmark)

public static class Writer extends CommonLmdbJni {

/**

* Whether {@link EnvFlags#MDB_NOSYNC} is used.

@Param("false")

boolean sync;

@Setup(Invocation)

@Override

public void setup(final BenchmarkParams b) throws IOException {

super.setup(b, sync);

}

@TearDown(Invocation)

@Override

public void teardown() throws IOException {

super.teardown();

}

benchmarks/src/main/java/org/lmdbjava/bench/LmdbJni.java at master · lmdbjava/benchmarks · GitHub

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