/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search licenses this
* file to you 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.elasticsearch.benchmark.fs;
import org.elasticsearch.common.StopWatch;
import org.elasticsearch.common.unit.ByteSizeValue;
import java.io.File;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Random;
/**
* @author kimchy (shay.banon)
*/
public class FsAppendBenchmark {
public static void main(String[] args) throws Exception {
new File("work/test.log").delete();
RandomAccessFile raf = new RandomAccessFile("work/test.log", "rw");
raf.setLength(0);
boolean CHANNEL = true;
int CHUNK = (int) ByteSizeValue.parseBytesSizeValue("1k").bytes();
long DATA = ByteSizeValue.parseBytesSizeValue("10gb").bytes();
byte[] data = new byte[CHUNK];
new Random().nextBytes(data);
StopWatch watch = new StopWatch().start("write");
if (CHANNEL) {
FileChannel channel = raf.getChannel();
long position = 0;
while (position < DATA) {
channel.write(ByteBuffer.wrap(data), position);
position += data.length;
}
watch.stop().start("flush");
channel.force(true);
} else {
long position = 0;
while (position < DATA) {
raf.write(data);
position += data.length;
}
watch.stop().start("flush");
raf.getFD().sync();
}
raf.close();
watch.stop();
System.out.println("Wrote [" + (new ByteSizeValue(DATA)) + "], chunk [" + (new ByteSizeValue(CHUNK)) + "], in " + watch);
}
private static final ByteBuffer fill = ByteBuffer.allocateDirect(1);
// public static long padLogFile(long position, long currentSize, long preAllocSize) throws IOException {
// if (position + 4096 >= currentSize) {
// currentSize = currentSize + preAllocSize;
// fill.position(0);
// f.getChannel().write(fill, currentSize - fill.remaining());
// }
// return currentSize;
// }
}