summaryrefslogtreecommitdiff
path: root/M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java
diff options
context:
space:
mode:
Diffstat (limited to 'M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java')
-rw-r--r--M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java332
1 files changed, 0 insertions, 332 deletions
diff --git a/M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java b/M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java
deleted file mode 100644
index 35a2374fbc..0000000000
--- a/M4-RCs/qpid/java/testkit/src/main/java/org/apache/qpid/testkit/perf/LatencyTest.java
+++ /dev/null
@@ -1,332 +0,0 @@
-/*
- *
- * 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.testkit.perf;
-
-import java.io.FileOutputStream;
-import java.io.PrintWriter;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.locks.Condition;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantLock;
-
-import javax.jms.BytesMessage;
-import javax.jms.DeliveryMode;
-import javax.jms.Message;
-import javax.jms.MessageConsumer;
-import javax.jms.MessageListener;
-import javax.jms.MessageProducer;
-import javax.jms.TextMessage;
-
-import org.apache.qpid.testkit.MessageFactory;
-
-/**
- * Latency test sends an x number of messages in warmup mode and wait for a confirmation
- * from the consumer that it has successfully consumed them and ready to start the
- * test. It will start sending y number of messages and each message will contain a time
- * stamp. This will be used at the receiving end to measure the latency.
- *
- * It is important to have a sufficiently large number for the warmup count to
- * ensure the system is in steady state before the test is started.
- *
- * If you plan to plot the latencies then msg_count should be a smaller number (ex 500 or 1000)
- * You also need to specify a file name using -Dfile=/home/rajith/latency.log.1
- *
- * The idea is to get a latency sample for the system once it achieves steady state.
- *
- */
-
-public class LatencyTest extends PerfBase implements MessageListener
-{
- MessageProducer producer;
- MessageConsumer consumer;
- Message msg;
- byte[] payload;
- long maxLatency = 0;
- long minLatency = Long.MAX_VALUE;
- long totalLatency = 0; // to calculate avg latency.
- int rcvdMsgCount = 0;
- double stdDev = 0;
- double avgLatency = 0;
- boolean warmup_mode = true;
- boolean transacted = false;
- int transSize = 0;
-
- final List<Long> latencies;
- final Lock lock = new ReentrantLock();
- final Condition warmedUp;
- final Condition testCompleted;
-
- public LatencyTest()
- {
- super();
- warmedUp = lock.newCondition();
- testCompleted = lock.newCondition();
- // Storing the following two for efficiency
- transacted = params.isTransacted();
- transSize = params.getTransactionSize();
- latencies = new ArrayList <Long>(params.getMsgCount());
- }
-
- public void setUp() throws Exception
- {
- super.setUp();
- consumer = session.createConsumer(dest);
- consumer.setMessageListener(this);
-
- // if message caching is enabled we pre create the message
- // else we pre create the payload
- if (params.isCacheMessage())
- {
- msg = MessageFactory.createBytesMessage(session, params.getMsgSize());
- msg.setJMSDeliveryMode(params.isDurable()?
- DeliveryMode.PERSISTENT :
- DeliveryMode.NON_PERSISTENT
- );
- }
- else
- {
- payload = MessageFactory.createMessagePayload(params.getMsgSize()).getBytes();
- }
-
- producer = session.createProducer(dest);
- producer.setDisableMessageID(params.isDisableMessageID());
- producer.setDisableMessageTimestamp(params.isDisableTimestamp());
- }
-
- protected Message getNextMessage() throws Exception
- {
- if (params.isCacheMessage())
- {
- return msg;
- }
- else
- {
- msg = session.createBytesMessage();
- ((BytesMessage)msg).writeBytes(payload);
- return msg;
- }
- }
-
- public void warmup()throws Exception
- {
- System.out.println("Warming up......");
- int count = params.getWarmupCount();
- for (int i=0; i < count; i++)
- {
- producer.send(getNextMessage());
- }
- Message msg = session.createTextMessage("End");
- producer.send(msg);
-
- if (params.isTransacted())
- {
- session.commit();
- }
-
- try
- {
- lock.lock();
- warmedUp.await();
- }
- finally
- {
- lock.unlock();
- }
- }
-
- public void onMessage(Message msg)
- {
- try
- {
- if (msg instanceof TextMessage && ((TextMessage)msg).getText().equals("End"))
- {
- if (warmup_mode)
- {
- warmup_mode = false;
- try
- {
- lock.lock();
- warmedUp.signal();
- }
- finally
- {
- lock.unlock();
- }
- }
- else
- {
- computeStats();
- }
- }
- else if (!warmup_mode)
- {
- long time = System.currentTimeMillis();
- rcvdMsgCount ++;
-
- if (transacted && (rcvdMsgCount % transSize == 0))
- {
- session.commit();
- }
-
- long latency = time - msg.getJMSTimestamp();
- latencies.add(latency);
- totalLatency = totalLatency + latency;
- }
-
- }
- catch(Exception e)
- {
- handleError(e,"Error when receiving messages");
- }
-
- }
-
- private void computeStats()
- {
- avgLatency = (double)totalLatency/(double)rcvdMsgCount;
- double sigma = 0;
-
- for (long latency: latencies)
- {
- maxLatency = Math.max(maxLatency, latency);
- minLatency = Math.min(minLatency, latency);
- sigma = sigma + Math.pow(latency - avgLatency,2);
- }
-
- stdDev = Math.sqrt(sigma/(rcvdMsgCount -1));
-
- try
- {
- lock.lock();
- testCompleted.signal();
- }
- finally
- {
- lock.unlock();
- }
- }
-
- public void writeToFile() throws Exception
- {
- String fileName = System.getProperty("file");
- PrintWriter writer = new PrintWriter(new FileOutputStream(fileName));
- for (long latency: latencies)
- {
- writer.println(String.valueOf(latency));
- }
- writer.flush();
- writer.close();
- }
-
- public void printToConsole()
- {
- System.out.println(new StringBuilder("Total Msgs Received : ").append(rcvdMsgCount).toString());
- System.out.println(new StringBuilder("Standard Deviation : ").
- append(df.format(stdDev)).
- append(" ms").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 startTest() throws Exception
- {
- System.out.println("Starting test......");
- int count = params.getMsgCount();
-
- for(int i=0; i < count; i++ )
- {
- Message msg = getNextMessage();
- msg.setJMSTimestamp(System.currentTimeMillis());
- producer.send(msg);
- if ( transacted && ((i+1) % transSize == 0))
- {
- session.commit();
- }
- }
- Message msg = session.createTextMessage("End");
- producer.send(msg);
- if (params.isTransacted())
- {
- session.commit();
- }
- }
-
- public void tearDown() throws Exception
- {
- try
- {
- lock.lock();
- testCompleted.await();
- }
- finally
- {
- lock.unlock();
- }
-
- producer.close();
- consumer.close();
- session.close();
- con.close();
- }
-
- public void test()
- {
- try
- {
- setUp();
- warmup();
- startTest();
- tearDown();
- }
- catch(Exception e)
- {
- handleError(e,"Error when running test");
- }
- }
-
-
- public static void main(String[] args)
- {
- LatencyTest latencyTest = new LatencyTest();
- latencyTest.test();
- latencyTest.printToConsole();
- if (System.getProperty("file") != null)
- {
- try
- {
- latencyTest.writeToFile();
- }
- catch(Exception e)
- {
- e.printStackTrace();
- }
- }
- }
-} \ No newline at end of file
View Lorry Controller Status