Examples of org.springframework.util.StopWatch

org.springframework.util.StopWatch
Simple stop watch, allowing for timing of a number of tasks, exposing total running time and running time for each named task.
Conceals use of System.currentTimeMillis(), improving the readability of application code and reducing the likelihood of calculation errors.
Note that this object is not designed to be thread-safe and does not use synchronization.
This class is normally used to verify performance during proof-of-concepts and in development, rather than as part of production applications. @author Rod Johnson @author Juergen Hoeller @author Sam Brannen @since May 2, 2001

    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    rbd.getPropertyValues().addPropertyValue("spouse", new RuntimeBeanReference("spouse"));
    lbf.registerBeanDefinition("test", rbd);
    lbf.registerBeanDefinition("spouse", new RootBeanDefinition(TestBean.class));
    TestBean spouse = (TestBean) lbf.getBean("spouse");
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      TestBean tb = (TestBean) lbf.getBean("test");
      assertSame(spouse, tb.getSpouse());
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 4000);
  }

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    testLookupOverrideMethodsWithSetterInjection(xbf, "overrideInheritedMethod", true);


    // Check cost of repeated construction of beans with method overrides
    // Will pick up misuse of CGLIB
    int howMany = 100;
    StopWatch sw = new StopWatch();
    sw.start("Look up " + howMany + " prototype bean instances with method overrides");
    for (int i = 0; i < howMany; i++) {
      testLookupOverrideMethodsWithSetterInjection(xbf, "overrideOnPrototype", false);
    }
    sw.stop();
    System.out.println(sw);
    if (!LogFactory.getLog(DefaultListableBeanFactory.class).isDebugEnabled()) {
      assertTrue(sw.getTotalTimeMillis() < 2000);
    }


    // Now test distinct bean with swapped value in factory, to ensure the two are independent
    OverrideOneMethod swappedOom = (OverrideOneMethod) xbf.getBean("overrideOneMethodSwappedReturnValues");

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    this.imageDatabase = imageDatabase;
  }


  public void listImages(int nrOfCalls) throws IOException {
    List images = this.imageDatabase.getImages();
    StopWatch stopWatch = new StopWatch();
    for (Iterator it = images.iterator(); it.hasNext();) {
      ImageDescriptor image = (ImageDescriptor) it.next();
      stopWatch.start(image.getName());
      ByteArrayOutputStream os = null;
      for (int i = 0; i < nrOfCalls; i++) {
        os = new ByteArrayOutputStream();
        this.imageDatabase.streamImage(image.getName(), os);
      }
      stopWatch.stop();
      System.out.println("Found image '" + image.getName() + "' with content size " + os.size() +
          " and description length " + image.getDescriptionLength());
    }
    System.out.println(stopWatch.prettyPrint());
  }

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  public WorkflowStarterClient(ListableBeanFactory beanFactory) {
    this.beanFactory = beanFactory;
  }


  public void invokeOrderServices(int orderId, int nrOfCalls) throws RpException{
    StopWatch stopWatch = new StopWatch(nrOfCalls + " OrderService call(s)");
    Map orderServices = this.beanFactory.getBeansOfType(JaxRpcWorkflowStarter.class);
    for (Iterator it = orderServices.keySet().iterator(); it.hasNext();) {
      String beanName = (String) it.next();
      JaxRpcWorkflowStarter orderService = (JaxRpcWorkflowStarter) orderServices.get(beanName);
      System.out.println("Calling OrderService '" + beanName + "' with order ID " + orderId);
      stopWatch.start(beanName);
      String order = null;
      for (int i = 0; i < nrOfCalls; i++) {
        //order = orderService.startWorkflow();
      }
      stopWatch.stop();
      if (order != null) {
        log.debug("Return Value:"+order);
      }
      else {
        System.out.println("Order with ID " + orderId + " not found");
      }
      System.out.println();
    }
    System.out.println(stopWatch.prettyPrint());
  }

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    public static void oneTimeSetUp() throws Exception {
        try {
            JahiaSite site = TestHelper.createSite(TESTSITE_NAME);
            JCRTemplate.getInstance().doExecuteWithSystemSession(new JCRCallback<Object>() {
                public Object doInJCR(JCRSessionWrapper session) throws RepositoryException {
                    StopWatch stopWatch = new StopWatch("oneTimeSetUp");
                    stopWatch.start(Thread.currentThread().getName() + " creating set up nodes");
                    int pagesCreated = TestHelper.createSubPages(session.getNode(SITECONTENT_ROOT_NODE), 3, NB_CHILDREN);
                    logger.info("Created " + pagesCreated + " page hierarchy.");
                    session.save();
                    stopWatch.stop();
                    logger.error(stopWatch.prettyPrint());
                    return null;
                }
            });
            Assert.assertNotNull(site);
        } catch (Exception ex) {

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    @Test
    public void testCreateManyChildUnstructuredNodes() throws RepositoryException {
        JCRTemplate.getInstance().doExecuteWithSystemSession(new JCRCallback<Object>() {
            public Object doInJCR(JCRSessionWrapper session) throws RepositoryException {
                StopWatch stopWatch = new StopWatch("testCreateManyChildUnstructuredNodes");
                stopWatch.start(Thread.currentThread().getName() + " creating unstructured nodes");
                JCRNodeWrapper currentNode = session.getNode(SITECONTENT_ROOT_NODE);
                Node node = currentNode.addNode("testnodeUnstructured", "nt:unstructured");
                for (int i = 0; i < CHILD_COUNT; i++) {
                    node.addNode("node" + i, "nt:unstructured");
                }
                session.save();
                stopWatch.stop();
                logger.error(stopWatch.prettyPrint());
                return null;
            }
        });
    }

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    @Test
    public void testCreateManyChildPageNodes() throws RepositoryException {
        JCRTemplate.getInstance().doExecuteWithSystemSession(new JCRCallback<Object>() {
            public Object doInJCR(JCRSessionWrapper session) throws RepositoryException {
                StopWatch stopWatch = new StopWatch("testCreateManyChildPageNodes");
                stopWatch.start(Thread.currentThread().getName() + " creating page nodes");
                JCRNodeWrapper currentNode = session.getNode(SITECONTENT_ROOT_NODE);
                Node node = currentNode.addNode("testPageNode", "jnt:page");
                for (int i = 0; i < CHILD_COUNT; i++) {
                    node.addNode("child" + Integer.toString(i), "jnt:page");
                }
                session.save();
                stopWatch.stop();
                logger.error(stopWatch.prettyPrint());
                return null;
            }
        });
    }

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    @Test
    public void testConcurrentRead() throws InterruptedException, ExecutionException {
        ExecutorService executor = Executors.newFixedThreadPool(300);
        ExecutorCompletionService<Boolean> service = new ExecutorCompletionService<Boolean>(executor);
        StopWatch stopWatch = new StopWatch("testConcurrentRead");
        stopWatch.start(Thread.currentThread().getName() + " only reading nodes");
        for (int i = 0; i < 1000; i++) {
            service.submit(new Reader(), Boolean.TRUE);
        }
        for (int i = 0; i < 1000; i++) {
            Boolean aBoolean = service.take().get();
        }
        stopWatch.stop();
        logger.error(stopWatch.prettyPrint());
        executor.shutdown();
    }

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    @Test
    public void testConcurrentReadWrite10Percent() throws InterruptedException, ExecutionException {
        ExecutorService executor = Executors.newFixedThreadPool(300);
        ExecutorCompletionService<Boolean> service = new ExecutorCompletionService<Boolean>(executor);
        StopWatch stopWatch = new StopWatch("testConcurrentReadWrite10Percent");
        stopWatch.start(Thread.currentThread().getName() + " reading // writing nodes (10% writers)");
        for (int i = 0; i < 1000; i++) {
            if (i % 10 == 0) {
                service.submit(new Writer("jnt:page"), Boolean.TRUE);
            } else {
                service.submit(new Reader(), Boolean.TRUE);
            }
        }
        for (int i = 0; i < 1000; i++) {
            Boolean aBoolean = service.take().get();
        }
        stopWatch.stop();
        logger.error(stopWatch.prettyPrint());
        executor.shutdown();
    }

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    @Test
    public void testConcurrentReadWrite1Percent() throws InterruptedException, ExecutionException {
        ExecutorService executor = Executors.newFixedThreadPool(300);
        ExecutorCompletionService<Boolean> service = new ExecutorCompletionService<Boolean>(executor);
        StopWatch stopWatch = new StopWatch("testConcurrentReadWrite1Percent");
        stopWatch.start(Thread.currentThread().getName() + " reading // writing nodes (1% writers)");
        for (int i = 0; i < 1000; i++) {
            if (i % 100 == 0) {
                service.submit(new Writer("jnt:page"), Boolean.TRUE);
            } else {
                service.submit(new Reader(), Boolean.TRUE);
            }
        }
        for (int i = 0; i < 1000; i++) {
            Boolean aBoolean = service.take().get();
        }
        stopWatch.stop();
        logger.error(stopWatch.prettyPrint());
        executor.shutdown();
    }

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