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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.zookeeper.server;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.jute.BinaryOutputArchive;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.ZKTestCase;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SerializationPerfTest extends ZKTestCase {
protected static final Logger LOG = LoggerFactory.getLogger(SerializationPerfTest.class);
private static class NullOutputStream extends OutputStream {
public void write(int b) {
// do nothing - exclude persistence from perf
}
}
static int createNodes(DataTree tree, String path, int depth, int childcount, int parentCVersion, byte[] data) throws KeeperException.NodeExistsException, KeeperException.NoNodeException {
path += "node" + depth;
tree.createNode(path, data, null, -1, ++parentCVersion, 1, 1);
if (--depth == 0) {
return 1;
}
path += "/";
int count = 1;
for (int i = 0; i < childcount; i++) {
count += createNodes(tree, path + i, depth, childcount, 1, data);
}
return count;
}
private static void serializeTree(int depth, int width, int len) throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
DataTree tree = new DataTree();
createNodes(tree, "/", depth, width, tree.getNode("/").stat.getCversion(), new byte[len]);
int count = tree.getNodeCount();
BinaryOutputArchive oa = BinaryOutputArchive.getArchive(new NullOutputStream());
System.gc();
long start = System.nanoTime();
tree.serialize(oa, "test");
long end = System.nanoTime();
long durationms = (end - start) / 1000000L;
long pernodeus = ((end - start) / 1000L) / count;
LOG.info("Serialized "
+ count + " nodes in "
+ durationms + " ms ("
+ pernodeus + "us/node), depth=" + depth
+ " width=" + width
+ " datalen=" + len);
}
@Test
public void testSingleSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(1, 0, 20);
}
@Test
public void testWideSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(2, 10000, 20);
}
@Test
public void testDeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(400, 1, 20);
}
@Test
public void test10Wide5DeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(5, 10, 20);
}
@Test
public void test15Wide5DeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(5, 15, 20);
}
@Test
public void test25Wide4DeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(4, 25, 20);
}
@Test
public void test40Wide4DeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(4, 40, 20);
}
@Test
public void test300Wide3DeepSerialize() throws InterruptedException, IOException, KeeperException.NodeExistsException, KeeperException.NoNodeException {
serializeTree(3, 300, 20);
}
}
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