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Diffstat (limited to 'trunk/qpid/java/tools/src/main/java/org/apache/qpid/tools/PerfConsumer.java')
| -rw-r--r-- | trunk/qpid/java/tools/src/main/java/org/apache/qpid/tools/PerfConsumer.java | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/trunk/qpid/java/tools/src/main/java/org/apache/qpid/tools/PerfConsumer.java b/trunk/qpid/java/tools/src/main/java/org/apache/qpid/tools/PerfConsumer.java new file mode 100644 index 0000000000..0ef0455a64 --- /dev/null +++ b/trunk/qpid/java/tools/src/main/java/org/apache/qpid/tools/PerfConsumer.java @@ -0,0 +1,267 @@ +/* + * + * 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.qpid.tools; + +import javax.jms.Destination; +import javax.jms.Message; +import javax.jms.MessageConsumer; +import javax.jms.MessageListener; +import javax.jms.MessageProducer; +import javax.jms.TextMessage; + +import org.apache.qpid.thread.Threading; + +/** + * PerfConsumer will receive x no of messages in warmup mode. + * Once it receives the Start message it will then signal the PerfProducer. + * It will start recording stats from the first message it receives after + * the warmup mode is done. + * + * The following calculations are done. + * The important numbers to look at is + * a) Avg Latency + * b) System throughput. + * + * Latency. + * ========= + * Currently this test is written with the assumption that either + * a) The Perf Producer and Consumer are on the same machine + * b) They are on separate machines that have their time synced via a Time Server + * + * In order to calculate latency the producer inserts a timestamp + * hen the message is sent. The consumer will note the current time the message is + * received and will calculate the latency as follows + * latency = rcvdTime - msg.getJMSTimestamp() + * + * Through out the test it will keep track of the max and min latency to show the + * variance in latencies. + * + * Avg latency is measured by adding all latencies and dividing by the total msgs. + * You can also compute this by (rcvdTime - testStartTime)/rcvdMsgCount + * + * Throughput + * =========== + * System throughput is calculated as follows + * rcvdMsgCount/(rcvdTime - testStartTime) + * + * Consumer rate is calculated as + * rcvdMsgCount/(rcvdTime - startTime) + * + * Note that the testStartTime referes to when the producer sent the first message + * and startTime is when the consumer first received a message. + * + * rcvdTime keeps track of when the last message is received. + * + * All throughput rates are given as msg/sec so the rates are multiplied by 1000. + * + */ + +public class PerfConsumer extends PerfBase implements MessageListener +{ + MessageConsumer consumer; + long maxLatency = 0; + long minLatency = Long.MAX_VALUE; + long totalLatency = 0; // to calculate avg latency. + int rcvdMsgCount = 0; + long testStartTime = 0; // to measure system throughput + long startTime = 0; // to measure consumer throughput + long rcvdTime = 0; + boolean transacted = false; + int transSize = 0; + + final Object lock = new Object(); + + public PerfConsumer() + { + super(); + } + + public void setUp() throws Exception + { + super.setUp(); + consumer = session.createConsumer(dest); + + // Storing the following two for efficiency + transacted = params.isTransacted(); + transSize = params.getTransactionSize(); + } + + public void warmup()throws Exception + { + System.out.println("Warming up......"); + + boolean start = false; + while (!start) + { + Message msg = consumer.receive(); + if (msg instanceof TextMessage) + { + if (((TextMessage)msg).getText().equals("End")) + { + start = true; + MessageProducer temp = session.createProducer(msg.getJMSReplyTo()); + temp.send(session.createMessage()); + if (params.isTransacted()) + { + session.commit(); + } + temp.close(); + } + } + } + } + + public void startTest() throws Exception + { + System.out.println("Starting test......"); + consumer.setMessageListener(this); + } + + public void printResults() throws Exception + { + synchronized (lock) + { + lock.wait(); + } + + double avgLatency = (double)totalLatency/(double)rcvdMsgCount; + double throughput = ((double)rcvdMsgCount/(double)(rcvdTime - testStartTime))*1000; + double consRate = ((double)rcvdMsgCount/(double)(rcvdTime - startTime))*1000; + System.out.println(new StringBuilder("Total Msgs Received : ").append(rcvdMsgCount).toString()); + System.out.println(new StringBuilder("Consumer rate : "). + append(df.format(consRate)). + append(" msg/sec").toString()); + System.out.println(new StringBuilder("System Throughput : "). + append(df.format(throughput)). + append(" msg/sec").toString()); + System.out.println(new StringBuilder("Avg Latency : "). + append(df.format(avgLatency)). + append(" ms").toString()); + System.out.println(new StringBuilder("Min Latency : "). + append(minLatency). + append(" ms").toString()); + System.out.println(new StringBuilder("Max Latency : "). + append(maxLatency). + append(" ms").toString()); + System.out.println("Completed the test......\n"); + } + + public void notifyCompletion(Destination replyTo) throws Exception + { + MessageProducer tmp = session.createProducer(replyTo); + Message endMsg = session.createMessage(); + tmp.send(endMsg); + if (params.isTransacted()) + { + session.commit(); + } + tmp.close(); + } + + public void tearDown() throws Exception + { + consumer.close(); + session.close(); + con.close(); + } + + public void onMessage(Message msg) + { + try + { + if (msg instanceof TextMessage && ((TextMessage)msg).getText().equals("End")) + { + notifyCompletion(msg.getJMSReplyTo()); + + synchronized (lock) + { + lock.notifyAll(); + } + } + else + { + rcvdTime = System.currentTimeMillis(); + rcvdMsgCount ++; + + if (rcvdMsgCount == 1) + { + startTime = rcvdTime; + testStartTime = msg.getJMSTimestamp(); + } + + if (transacted && (rcvdMsgCount % transSize == 0)) + { + session.commit(); + } + + long latency = rcvdTime - msg.getJMSTimestamp(); + maxLatency = Math.max(maxLatency, latency); + minLatency = Math.min(minLatency, latency); + totalLatency = totalLatency + latency; + } + + } + catch(Exception e) + { + handleError(e,"Error when receiving messages"); + } + + } + + public void test() + { + try + { + setUp(); + warmup(); + startTest(); + printResults(); + tearDown(); + } + catch(Exception e) + { + handleError(e,"Error when running test"); + } + } + + public static void main(String[] args) + { + final PerfConsumer cons = new PerfConsumer(); + Runnable r = new Runnable() + { + public void run() + { + cons.test(); + } + }; + + Thread t; + try + { + t = Threading.getThreadFactory().createThread(r); + } + catch(Exception e) + { + throw new Error("Error creating consumer thread",e); + } + t.start(); + } +}
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