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#7111 cleaned up one case of redundant CRC32 digest and byte[] creation. Adjusted benchmark checkpoint interval to default value to be able to judge performance impact of the move.

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Fixes #7166
This commit is contained in:
Armin 2017-05-19 16:34:06 +02:00 • committed by Armin Braun
parent 1ea449f5a8
commit c80eabbc9d
2 changed files with 33 additions and 23 deletions
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4
logstash-core/benchmarks/src/main/java/org/logstash/benchmark/QueueBenchmark.java
View file

@ -87,8 +87,8 @@ public class QueueBenchmark {
.capacity(256 * 1024 * 1024)
.queueMaxBytes(Long.MAX_VALUE)
.elementIOFactory(MmapPageIO::new)
.checkpointMaxWrites(50_000)
.checkpointMaxAcks(50_000)
.checkpointMaxWrites(1024)
.checkpointMaxAcks(1024)
.checkpointIOFactory(FileCheckpointIO::new)
.elementClass(Event.class).build();
}

52
logstash-core/src/main/java/org/logstash/ackedqueue/io/FileCheckpointIO.java
View file

@ -1,23 +1,20 @@
package org.logstash.ackedqueue.io;
import java.nio.channels.FileChannel;
import org.logstash.ackedqueue.Checkpoint;
import org.logstash.common.io.BufferedChecksumStreamInput;
import org.logstash.common.io.BufferedChecksumStreamOutput;
import org.logstash.common.io.ByteArrayStreamOutput;
import org.logstash.common.io.InputStreamStreamInput;
import java.io.ByteArrayInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import static java.nio.file.StandardOpenOption.CREATE;
import static java.nio.file.StandardOpenOption.WRITE;
import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
import static java.nio.file.StandardOpenOption.DSYNC;
import java.util.zip.CRC32;
public class FileCheckpointIO implements CheckpointIO {
public class FileCheckpointIO implements CheckpointIO {
// Checkpoint file structure
//
// byte version;
@ -35,9 +32,16 @@ public class FileCheckpointIO implements CheckpointIO {
+ Integer.BYTES // eventCount
+ Integer.BYTES; // checksum
/**
* Using {@link java.nio.DirectByteBuffer} to avoid allocations and copying in
* {@link FileChannel#write(ByteBuffer)} and {@link CRC32#update(ByteBuffer)} calls.
*/
private final ByteBuffer buffer = ByteBuffer.allocateDirect(BUFFER_SIZE);
private final CRC32 crc32 = new CRC32();
private static final String HEAD_CHECKPOINT = "checkpoint.head";
private static final String TAIL_CHECKPOINT = "checkpoint.";
private static final OpenOption[] WRITE_OPTIONS = { WRITE, CREATE, TRUNCATE_EXISTING, DSYNC };
private final String dirPath;
public FileCheckpointIO(String dirPath) {
@ -64,10 +68,12 @@ public class FileCheckpointIO implements CheckpointIO {
@Override
public void write(String fileName, Checkpoint checkpoint) throws IOException {
Path path = Paths.get(dirPath, fileName);
final byte[] buffer = new byte[BUFFER_SIZE];
write(checkpoint, buffer);
Files.write(path, buffer, WRITE_OPTIONS);
buffer.flip();
try (FileOutputStream out = new FileOutputStream(Paths.get(dirPath, fileName).toFile())) {
out.getChannel().write(buffer);
out.getFD().sync();
}
}
@Override
@ -115,14 +121,18 @@ public class FileCheckpointIO implements CheckpointIO {
return new Checkpoint(pageNum, firstUnackedPageNum, firstUnackedSeqNum, minSeqNum, elementCount);
}
private void write(Checkpoint checkpoint, byte[] buf) throws IOException {
BufferedChecksumStreamOutput output = new BufferedChecksumStreamOutput(new ByteArrayStreamOutput(buf));
output.writeShort((short)Checkpoint.VERSION);
output.writeInt(checkpoint.getPageNum());
output.writeInt(checkpoint.getFirstUnackedPageNum());
output.writeLong(checkpoint.getFirstUnackedSeqNum());
output.writeLong(checkpoint.getMinSeqNum());
output.writeInt(checkpoint.getElementCount());
output.writeInt((int)output.getChecksum());
private void write(Checkpoint checkpoint, ByteBuffer buf) {
crc32.reset();
buf.clear();
buf.putShort((short)Checkpoint.VERSION);
buf.putInt(checkpoint.getPageNum());
buf.putInt(checkpoint.getFirstUnackedPageNum());
buf.putLong(checkpoint.getFirstUnackedSeqNum());
buf.putLong(checkpoint.getMinSeqNum());
buf.putInt(checkpoint.getElementCount());
buf.flip();
crc32.update(buf);
buf.position(BUFFER_SIZE - Integer.BYTES).limit(BUFFER_SIZE);
buf.putInt((int)crc32.getValue());
}
}