Java tutorial
/* * 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.bookkeeper.benchmark; import io.netty.buffer.ByteBuf; import io.netty.buffer.PooledByteBufAllocator; import io.netty.buffer.Unpooled; import io.netty.channel.EventLoopGroup; import io.netty.channel.epoll.EpollEventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.util.concurrent.DefaultThreadFactory; import java.io.IOException; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import org.apache.bookkeeper.client.BKException; import org.apache.bookkeeper.client.BookKeeper; import org.apache.bookkeeper.client.LedgerHandle; import org.apache.bookkeeper.client.api.WriteFlag; import org.apache.bookkeeper.common.util.OrderedExecutor; import org.apache.bookkeeper.conf.ClientConfiguration; import org.apache.bookkeeper.net.BookieSocketAddress; import org.apache.bookkeeper.proto.BookieClient; import org.apache.bookkeeper.proto.BookieClientImpl; import org.apache.bookkeeper.proto.BookieProtocol; import org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.WriteCallback; import org.apache.bookkeeper.stats.NullStatsLogger; import org.apache.bookkeeper.util.ByteBufList; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Options; import org.apache.commons.cli.ParseException; import org.apache.commons.cli.PosixParser; import org.apache.commons.lang.SystemUtils; import org.apache.zookeeper.KeeperException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * A utility class used for benchmarking the performance of bookies. */ public class BenchBookie { static final Logger LOG = LoggerFactory.getLogger(BenchBookie.class); static class LatencyCallback implements WriteCallback { boolean complete; @Override public synchronized void writeComplete(int rc, long ledgerId, long entryId, BookieSocketAddress addr, Object ctx) { if (rc != 0) { LOG.error("Got error " + rc); } complete = true; notifyAll(); } public synchronized void resetComplete() { complete = false; } public synchronized void waitForComplete() throws InterruptedException { while (!complete) { wait(); } } } static class ThroughputCallback implements WriteCallback { int count; int waitingCount = Integer.MAX_VALUE; public synchronized void writeComplete(int rc, long ledgerId, long entryId, BookieSocketAddress addr, Object ctx) { if (rc != 0) { LOG.error("Got error " + rc); } count++; if (count >= waitingCount) { notifyAll(); } } public synchronized void waitFor(int count) throws InterruptedException { while (this.count < count) { waitingCount = count; wait(1000); } waitingCount = Integer.MAX_VALUE; } } private static long getValidLedgerId(String zkServers) throws IOException, BKException, KeeperException, InterruptedException { BookKeeper bkc = null; LedgerHandle lh = null; long id = 0; try { bkc = new BookKeeper(zkServers); lh = bkc.createLedger(1, 1, BookKeeper.DigestType.CRC32, new byte[20]); id = lh.getId(); return id; } finally { if (lh != null) { lh.close(); } if (bkc != null) { bkc.close(); } } } /** * @param args * @throws InterruptedException */ public static void main(String[] args) throws InterruptedException, ParseException, IOException, BKException, KeeperException { Options options = new Options(); options.addOption("host", true, "Hostname or IP of bookie to benchmark"); options.addOption("port", true, "Port of bookie to benchmark (default 3181)"); options.addOption("zookeeper", true, "Zookeeper ensemble, (default \"localhost:2181\")"); options.addOption("size", true, "Size of message to send, in bytes (default 1024)"); options.addOption("warmupCount", true, "Number of messages in warmup phase (default 999)"); options.addOption("latencyCount", true, "Number of messages in latency phase (default 5000)"); options.addOption("throughputCount", true, "Number of messages in throughput phase (default 50000)"); options.addOption("help", false, "This message"); CommandLineParser parser = new PosixParser(); CommandLine cmd = parser.parse(options, args); if (cmd.hasOption("help") || !cmd.hasOption("host")) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("BenchBookie <options>", options); System.exit(-1); } String addr = cmd.getOptionValue("host"); int port = Integer.parseInt(cmd.getOptionValue("port", "3181")); int size = Integer.parseInt(cmd.getOptionValue("size", "1024")); String servers = cmd.getOptionValue("zookeeper", "localhost:2181"); int warmUpCount = Integer.parseInt(cmd.getOptionValue("warmupCount", "999")); int latencyCount = Integer.parseInt(cmd.getOptionValue("latencyCount", "5000")); int throughputCount = Integer.parseInt(cmd.getOptionValue("throughputCount", "50000")); EventLoopGroup eventLoop; if (SystemUtils.IS_OS_LINUX) { try { eventLoop = new EpollEventLoopGroup(); } catch (Throwable t) { LOG.warn("Could not use Netty Epoll event loop for benchmark {}", t.getMessage()); eventLoop = new NioEventLoopGroup(); } } else { eventLoop = new NioEventLoopGroup(); } OrderedExecutor executor = OrderedExecutor.newBuilder().name("BenchBookieClientScheduler").numThreads(1) .build(); ScheduledExecutorService scheduler = Executors .newSingleThreadScheduledExecutor(new DefaultThreadFactory("BookKeeperClientScheduler")); ClientConfiguration conf = new ClientConfiguration(); BookieClient bc = new BookieClientImpl(conf, eventLoop, PooledByteBufAllocator.DEFAULT, executor, scheduler, NullStatsLogger.INSTANCE); LatencyCallback lc = new LatencyCallback(); ThroughputCallback tc = new ThroughputCallback(); long ledger = getValidLedgerId(servers); for (long entry = 0; entry < warmUpCount; entry++) { ByteBuf toSend = Unpooled.buffer(size); toSend.resetReaderIndex(); toSend.resetWriterIndex(); toSend.writeLong(ledger); toSend.writeLong(entry); toSend.writerIndex(toSend.capacity()); bc.addEntry(new BookieSocketAddress(addr, port), ledger, new byte[20], entry, ByteBufList.get(toSend), tc, null, BookieProtocol.FLAG_NONE, false, WriteFlag.NONE); } LOG.info("Waiting for warmup"); tc.waitFor(warmUpCount); ledger = getValidLedgerId(servers); LOG.info("Benchmarking latency"); long startTime = System.nanoTime(); for (long entry = 0; entry < latencyCount; entry++) { ByteBuf toSend = Unpooled.buffer(size); toSend.resetReaderIndex(); toSend.resetWriterIndex(); toSend.writeLong(ledger); toSend.writeLong(entry); toSend.writerIndex(toSend.capacity()); lc.resetComplete(); bc.addEntry(new BookieSocketAddress(addr, port), ledger, new byte[20], entry, ByteBufList.get(toSend), lc, null, BookieProtocol.FLAG_NONE, false, WriteFlag.NONE); lc.waitForComplete(); } long endTime = System.nanoTime(); LOG.info("Latency: " + (((double) (endTime - startTime)) / ((double) latencyCount)) / 1000000.0); ledger = getValidLedgerId(servers); LOG.info("Benchmarking throughput"); startTime = System.currentTimeMillis(); tc = new ThroughputCallback(); for (long entry = 0; entry < throughputCount; entry++) { ByteBuf toSend = Unpooled.buffer(size); toSend.resetReaderIndex(); toSend.resetWriterIndex(); toSend.writeLong(ledger); toSend.writeLong(entry); toSend.writerIndex(toSend.capacity()); bc.addEntry(new BookieSocketAddress(addr, port), ledger, new byte[20], entry, ByteBufList.get(toSend), tc, null, BookieProtocol.FLAG_NONE, false, WriteFlag.NONE); } tc.waitFor(throughputCount); endTime = System.currentTimeMillis(); LOG.info("Throughput: " + ((long) throughputCount) * 1000 / (endTime - startTime)); bc.close(); scheduler.shutdown(); eventLoop.shutdownGracefully(); executor.shutdown(); } }