/**
* 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.activemq.store.kahadb.disk.index;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import junit.framework.TestCase;
import org.apache.activemq.store.kahadb.disk.page.PageFile;
import org.apache.activemq.store.kahadb.disk.page.Transaction;
import org.apache.activemq.util.IOHelper;
/**
* @author chirino
*/
public abstract class IndexBenchmark extends TestCase {
// Slower machines might need to make this bigger.
private static final long SAMPLE_DURATION = Integer.parseInt(System.getProperty("SAMPLES_DURATION", "" + 1000 * 5));
// How many times do we sample?
private static final long SAMPLES = Integer.parseInt(System.getProperty("SAMPLES", "" + 60 * 1000 / SAMPLE_DURATION));
// How many indexes will we be benchmarking concurrently?
private static final int INDEX_COUNT = Integer.parseInt(System.getProperty("INDEX_COUNT", "" + 1));
// Indexes tend to perform worse when they get big.. so how many items
// should we put into the index before we start sampling.
private static final int INDEX_PRE_LOAD_COUNT = Integer.parseInt(System.getProperty("INDEX_PRE_LOAD_COUNT", "" + 10000 / INDEX_COUNT));
protected File ROOT_DIR;
protected final HashMap<String, Index<String, Long>> indexes = new HashMap<String, Index<String, Long>>();
protected PageFile pf;
public void setUp() throws Exception {
ROOT_DIR = new File(IOHelper.getDefaultDataDirectory());
IOHelper.delete(ROOT_DIR);
pf = new PageFile(ROOT_DIR, getClass().getName());
pf.load();
}
protected void tearDown() throws Exception {
Transaction tx = pf.tx();
for (Index<?, ?> i : indexes.values()) {
try {
i.unload(tx);
} catch (Throwable ignore) {
}
}
tx.commit();
}
abstract protected Index<String, Long> createIndex() throws Exception;
synchronized private Index<String, Long> openIndex(String name) throws Exception {
Transaction tx = pf.tx();
Index<String, Long> index = indexes.get(name);
if (index == null) {
index = createIndex();
index.load(tx);
indexes.put(name, index);
}
tx.commit();
return index;
}
class Producer extends Thread {
private final String name;
AtomicBoolean shutdown = new AtomicBoolean();
public Producer(String name) {
super("Producer: " + name);
this.name = name;
}
public void shutdown() {
shutdown.set(true);
}
@Override
public void run() {
try {
Transaction tx = pf.tx();
Index<String,Long> index = openIndex(name);
long counter = 0;
while (!shutdown.get()) {
long c = counter;
String key = key(c);
index.put(tx, key, c);
tx.commit();
Thread.yield(); // This avoids consumer starvation..
onProduced(counter++);
}
} catch (Throwable e) {
e.printStackTrace();
}
}
public void onProduced(long counter) {
}
}
protected String key(long c) {
return "a-long-message-id-like-key-" + c;
}
class Consumer extends Thread {
private final String name;
AtomicBoolean shutdown = new AtomicBoolean();
public Consumer(String name) {
super("Consumer: " + name);
this.name = name;
}
public void shutdown() {
shutdown.set(true);
}
@Override
public void run() {
try {
Transaction tx = pf.tx();
Index<String,Long> index = openIndex(name);
long counter = 0;
while (!shutdown.get()) {
long c = counter;
String key = key(c);
Long record = index.get(tx, key);
if (record != null) {
if( index.remove(tx, key) == null ) {
System.out.print("Remove failed...");
}
tx.commit();
onConsumed(counter++);
}
}
} catch (Throwable e) {
e.printStackTrace();
}
}
public void onConsumed(long counter) {
}
}
protected void dumpIndex(Index<String, Long> index) throws IOException {
}
public void testLoad() throws Exception {
final Producer producers[] = new Producer[INDEX_COUNT];
final Consumer consumers[] = new Consumer[INDEX_COUNT];
final CountDownLatch preloadCountDown = new CountDownLatch(INDEX_COUNT);
final AtomicLong producedRecords = new AtomicLong();
final AtomicLong consumedRecords = new AtomicLong();
System.out.println("Starting: " + INDEX_COUNT + " producers");
for (int i = 0; i < INDEX_COUNT; i++) {
producers[i] = new Producer("test-" + i) {
private boolean prelaodDone;
public void onProduced(long counter) {
if (!prelaodDone && counter >= INDEX_PRE_LOAD_COUNT) {
prelaodDone = true;
preloadCountDown.countDown();
}
producedRecords.incrementAndGet();
}
};
producers[i].start();
}
long start = System.currentTimeMillis();
System.out.println("Waiting for each producer create " + INDEX_PRE_LOAD_COUNT + " records before starting the consumers.");
preloadCountDown.await();
long end = System.currentTimeMillis();
System.out.println("Preloaded " + INDEX_PRE_LOAD_COUNT * INDEX_COUNT + " records at " + (INDEX_PRE_LOAD_COUNT * INDEX_COUNT * 1000f / (end - start)) + " records/sec");
System.out.println("Starting: " + INDEX_COUNT + " consumers");
for (int i = 0; i < INDEX_COUNT; i++) {
consumers[i] = new Consumer("test-" + i) {
public void onConsumed(long counter) {
consumedRecords.incrementAndGet();
}
};
consumers[i].start();
}
long sample_start = System.currentTimeMillis();
System.out.println("Taking " + SAMPLES + " performance samples every " + SAMPLE_DURATION + " ms");
System.out.println("time (s), produced, produce rate (r/s), consumed, consume rate (r/s), used memory (k)");
producedRecords.set(0);
consumedRecords.set(0);
for (int i = 0; i < SAMPLES; i++) {
start = System.currentTimeMillis();
Thread.sleep(SAMPLE_DURATION);
end = System.currentTimeMillis();
long p = producedRecords.getAndSet(0);
long c = consumedRecords.getAndSet(0);
long usedMemory = Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
System.out.println(((end-sample_start)/1000f)+", "+p+", "+(p * 1000f / (end - start)) + ", "+ c+", " + (c * 1000f / (end - start))+", "+(usedMemory/(1024)) );
}
System.out.println("Samples done... Shutting down the producers and consumers...");
for (int i = 0; i < INDEX_COUNT; i++) {
producers[i].shutdown();
consumers[i].shutdown();
}
for (int i = 0; i < INDEX_COUNT; i++) {
producers[i].join(1000 * 5);
consumers[i].join(1000 * 5);
}
System.out.println("Shutdown.");
}
}