/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.testio;
import java.nio.ByteBuffer;
import org.junit.Test;
import com.cloudera.util.Benchmark;
/**
* This is a performance test to see how expensive different string/byte
* translations cost
*/
public class PerfStringTrans {
int times = 10000000;
String base = "this is a test";
@Test
public void testStringToByteArray() {
Benchmark b = new Benchmark("String to ByteArray");
b.mark("begin");
for (int i = 0; i < times; i++) {
base.getBytes();
}
b.mark("after " + times);
b.done();
}
@Test
public void testStringToWrapByteBuffer() {
Benchmark b = new Benchmark("String wrap ByteBuf");
b.mark("begin");
for (int i = 0; i < times; i++) {
ByteBuffer.wrap(base.getBytes());
}
b.mark("after " + times);
b.done();
}
@Test
public void testStringtoByteBufferCopy() {
Benchmark b = new Benchmark("String alloc ByteBuf");
b.mark("begin");
for (int i = 0; i < times; i++) {
byte[] buf = base.getBytes();
ByteBuffer bb = ByteBuffer.allocate(buf.length);
bb.put(buf);
}
b.mark("after " + times);
b.done();
}
@Test
public void testStringToByteArray2() {
Benchmark b = new Benchmark("String to ByteArray");
b.mark("begin");
for (int i = 0; i < times; i++) {
base.getBytes();
}
b.mark("after " + times);
b.done();
}
@Test
public void testStringToWrapByteBuffer2() {
Benchmark b = new Benchmark("String wrap ByteBuf");
b.mark("begin");
for (int i = 0; i < times; i++) {
ByteBuffer.wrap(base.getBytes());
}
b.mark("after " + times);
b.done();
}
@Test
public void testStringtoByteBufferCopy2() {
Benchmark b = new Benchmark("String alloc ByteBuf");
b.mark("begin");
for (int i = 0; i < times; i++) {
byte[] buf = base.getBytes();
ByteBuffer bb = ByteBuffer.allocate(buf.length);
bb.put(buf);
}
b.mark("after " + times);
b.done();
}
}