mirror of https://github.com/apache/jclouds.git
Improved support for concurrent testing in PerformanceTest. Also more fiddling measuring performance metrics for DateService, without getting any reliable results
git-svn-id: http://jclouds.googlecode.com/svn/trunk@841 3d8758e0-26b5-11de-8745-db77d3ebf521
This commit is contained in:
jamurty
parent
11f7e9900b
commit
7ec97fa97a
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@ -37,6 +37,8 @@ import org.joda.time.DateTimeZone;
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import org.joda.time.format.DateTimeFormat;
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import org.joda.time.format.DateTimeFormatter;
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import com.google.common.annotations.VisibleForTesting;
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/**
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* Parses and formats the ISO8601 and RFC822 date formats found in
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* XML responses and HTTP response headers.
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@ -122,4 +124,22 @@ public class DateService {
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}
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}
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/*
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* Alternative implementations of Format and Parse -- used to
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* test relative speeds.
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* TODO: Remove methods below once sufficient performance testing is complete.
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*/
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@VisibleForTesting
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public final DateTime jodaIso8601DateParse(String toParse) {
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return new DateTime(toParse);
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}
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@VisibleForTesting
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public final String sdfIso8601DateFormat(DateTime dateTime) {
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synchronized (iso8601SimpleDateFormat) {
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return iso8601SimpleDateFormat.format(dateTime.toDate());
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}
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}
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}
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@ -23,6 +23,12 @@
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*/
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package org.jclouds.aws;
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import java.util.List;
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import java.util.concurrent.Callable;
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import java.util.concurrent.CompletionService;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorCompletionService;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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@ -38,6 +44,7 @@ import org.testng.annotations.Test;
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@Test(groups = "performance")
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public class PerformanceTest {
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protected static int LOOP_COUNT = 1000;
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protected static int THREAD_COUNT = 1000;
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protected ExecutorService exec;
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@BeforeTest
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@ -50,4 +57,78 @@ public class PerformanceTest {
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exec.shutdownNow();
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exec = null;
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}
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/**
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* Executes a list of Runnable tasks in {@link #THREAD_COUNT}
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* simultaneous threads, and outputs the timing results.
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* <p>
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* This method is careful to time only the actual task execution
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* time, not the overhead of creating and queuing the tasks.
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* We also use CountDownLatches to ensure that all tasks start
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* at the same time, so concurrency is fully tested without
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* ramp-up or ramp-down times.
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* <p>
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* This code is heavily based on Listing 5.11 in
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* "Java Concurrency in Practice" by Brian Goetz et al,
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* Addison-Wesley Professional.
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*
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* @see {@link DateServiceTest} for example usage.
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*
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* @param performanceTestName
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* @param tasks
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* @throws InterruptedException
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* @throws ExecutionException
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* @throws Throwable
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*/
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protected void executeMultiThreadedPerformanceTest(String performanceTestName, List<Runnable> tasks)
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throws InterruptedException, ExecutionException, Throwable
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{
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CompletionService<Throwable> completer = new ExecutorCompletionService<Throwable>(exec);
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final CountDownLatch startGate = new CountDownLatch(1);
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final CountDownLatch endGate = new CountDownLatch(THREAD_COUNT);
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for (int i = 0; i < THREAD_COUNT; i++) {
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final Runnable task = tasks.get(i % tasks.size());
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// Wrap task so we can count down endGate.
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completer.submit(new Callable<Throwable>() {
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public Throwable call() {
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try {
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startGate.await(); // Wait to start simultaneously
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task.run();
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return null;
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} catch (Throwable t) {
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return t;
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} finally {
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endGate.countDown(); // Notify that I've finished
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}
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}
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});
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}
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// Only time the execution time for all tasks, not start/stop times.
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long startTime = System.nanoTime();
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startGate.countDown(); // Trigger start of all tasks
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endGate.await();
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long endTime = System.nanoTime() - startTime;
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// Check for assertion failures
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Throwable t;
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for (int i = 0; i < THREAD_COUNT; i++) {
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t = completer.take().get();
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if (t != null) {
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throw t;
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}
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}
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if (performanceTestName != null) {
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System.out.printf("TIMING: Multi-threaded %s took %.3fms for %d threads\n",
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performanceTestName, ((double)endTime / 1000000), THREAD_COUNT);
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}
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}
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protected void executeMultiThreadedCorrectnessTest(List<Runnable> tasks)
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throws InterruptedException, ExecutionException, Throwable
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{
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executeMultiThreadedPerformanceTest(null, tasks);
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}
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}
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@ -24,21 +24,14 @@
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package com.amazon.s3;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertTrue;
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import java.util.Date;
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import java.util.Locale;
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import java.util.concurrent.Callable;
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import java.util.concurrent.CompletionService;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorCompletionService;
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import org.jclouds.aws.PerformanceTest;
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import org.jclouds.aws.s3.util.DateService;
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import org.joda.time.DateTime;
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import org.joda.time.DateTimeZone;
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import org.joda.time.format.DateTimeFormat;
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import org.joda.time.format.DateTimeFormatter;
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import org.testng.annotations.Test;
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import com.google.inject.Guice;
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@ -66,71 +59,40 @@ public class DateServiceTest extends PerformanceTest {
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class TestData {
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public final String iso8601DateString;
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public final String rfc822DateString;
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public final Date date;
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public final DateTime date;
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TestData(String iso8601, String rfc822, Date date) {
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TestData(String iso8601, String rfc822, DateTime dateTime) {
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this.iso8601DateString = iso8601;
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this.rfc822DateString = rfc822;
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this.date = date;
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this.date = dateTime;
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}
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}
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private long startTime;
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public DateServiceTest() {
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// Constant time test values, each TestData item must contain matching times!
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testData = new TestData[] {
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new TestData("2009-03-12T02:00:07.000Z", "Thu, 12 Mar 2009 02:00:07 GMT", new Date(
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1236823207000l)),
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new TestData("2009-03-14T04:00:07.000Z", "Sat, 14 Mar 2009 04:00:07 GMT", new Date(
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1237003207000l)),
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new TestData("2009-03-16T06:00:07.000Z", "Mon, 16 Mar 2009 06:00:07 GMT", new Date(
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1237183207000l)),
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new TestData("2009-03-18T08:00:07.000Z", "Wed, 18 Mar 2009 08:00:07 GMT", new Date(
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1237363207000l)),
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new TestData("2009-03-20T10:00:07.000Z", "Fri, 20 Mar 2009 10:00:07 GMT", new Date(
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1237543207000l)) };
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}
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// Joda items for performance comparisons
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private DateTimeFormatter headerDateFormat = DateTimeFormat.forPattern(
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"EEE, dd MMM yyyy HH:mm:ss 'GMT'").withLocale(Locale.US);
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private DateTime jodaParseIso8601(String toParse) {
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return new DateTime(toParse);
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}
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private DateTime jodaParseRfc822(String toParse) {
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return headerDateFormat.parseDateTime(toParse);
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}
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private String timestampAsHeaderString() {
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return toHeaderString(new DateTime());
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}
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private String toHeaderString(DateTime date) {
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return headerDateFormat.print(date.withZone(DateTimeZone.UTC));
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}
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private void startClock() {
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startTime = System.currentTimeMillis();
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}
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private void printElapsedClockTime(String testName) {
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System.out.println(testName + " took " + (System.currentTimeMillis() - startTime) + "ms for "
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+ LOOP_COUNT + " loops");
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new TestData("2009-03-12T02:00:07.000Z", "Thu, 12 Mar 2009 02:00:07 GMT",
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new DateTime(1236823207000l)),
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new TestData("2009-03-14T04:00:07.000Z", "Sat, 14 Mar 2009 04:00:07 GMT",
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new DateTime(1237003207000l)),
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new TestData("2009-03-16T06:00:07.000Z", "Mon, 16 Mar 2009 06:00:07 GMT",
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new DateTime(1237183207000l)),
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new TestData("2009-03-18T08:00:07.000Z", "Wed, 18 Mar 2009 08:00:07 GMT",
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new DateTime(1237363207000l)),
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new TestData("2009-03-20T10:00:07.000Z", "Fri, 20 Mar 2009 10:00:07 GMT",
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new DateTime(1237543207000l)) };
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}
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@Test
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public void testIso8601DateParse() throws ExecutionException, InterruptedException {
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DateTime dsDate = dateService.iso8601DateParse(testData[0].iso8601DateString);
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assertEquals(dsDate.toDate(), testData[0].date);
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assertEquals(dsDate, testData[0].date);
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}
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@Test
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public void testRfc822DateParse() throws ExecutionException, InterruptedException {
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DateTime dsDate = dateService.rfc822DateParse(testData[0].rfc822DateString);
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assertEquals(dsDate.toDate(), testData[0].date);
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assertEquals(dsDate, testData[0].date);
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}
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@Test
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@ -158,69 +120,72 @@ public class DateServiceTest extends PerformanceTest {
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}
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@Test
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void testFormatIso8601DateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++) {
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final TestData myData = testData[i % testData.length];
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completer.submit(new Callable<Boolean>() {
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public Boolean call() throws ExecutionException, InterruptedException {
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String dsString = dateService.iso8601DateFormat(myData.date);
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/*
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* Comment-in the assert below to test thread safety. Comment it out to test
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* performance
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*/
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assertEquals(dsString, myData.iso8601DateString);
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return true;
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}
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});
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void testFormatIso8601DateCorrectnessInParallel() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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String dsString = dateService.iso8601DateFormat(myData.date);
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assertEquals(dsString, myData.iso8601DateString);
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}
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});
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}
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for (int i = 0; i < LOOP_COUNT; i++)
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assertTrue(completer.take().get());
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printElapsedClockTime("testFormatIso8601DateInParallel");
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executeMultiThreadedCorrectnessTest(tasks);
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}
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@Test
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void testFormatAmazonDateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++)
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completer.submit(new Callable<Boolean>() {
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public Boolean call() {
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AWSAuthConnection.httpDate();
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return true;
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}
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});
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for (int i = 0; i < LOOP_COUNT; i++)
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assertTrue(completer.take().get());
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printElapsedClockTime("testFormatAmazonDateInParallel");
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}
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@Test
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void testFormatJodaDateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++) {
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final TestData myData = testData[i % testData.length];
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completer.submit(new Callable<Boolean>() {
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public Boolean call() {
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String jodaString = toHeaderString(new DateTime(myData.date));
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assertEquals(jodaString, myData.rfc822DateString);
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return true;
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}
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});
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void testFormatIso8601DatePerformanceInParallel() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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dateService.iso8601DateFormat(myData.date);
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}
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});
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}
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for (int i = 0; i < LOOP_COUNT; i++)
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assertTrue(completer.take().get());
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printElapsedClockTime("testFormatJodaDateInParallel");
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executeMultiThreadedPerformanceTest("testFormatIso8601DatePerformanceInParallel", tasks);
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}
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@Test
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void testIso8601ParseDateSerialResponseTime() throws ExecutionException, InterruptedException {
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void testFormatIso8601DatePerformanceInParallel_SdfAlternative() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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dateService.sdfIso8601DateFormat(myData.date);
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}
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});
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}
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executeMultiThreadedPerformanceTest(
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"testFormatIso8601DatePerformanceInParallel_SdfAlternative", tasks);
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}
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@Test
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void testFormatAmazonDatePerformanceInParallel() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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tasks.add(
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new Runnable() {
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public void run() {
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AWSAuthConnection.httpDate();
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}}
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);
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executeMultiThreadedPerformanceTest("testFormatAmazonDatePerformanceInParallel", tasks);
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}
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@Test
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void testParseIso8601DateSerialResponseTime() throws ExecutionException, InterruptedException {
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for (int i = 0; i < LOOP_COUNT; i++)
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dateService.iso8601DateParse(testData[0].iso8601DateString);
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}
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@Test
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void testParseIso8601DateSerialResponseTime_JodaAlternative()
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throws ExecutionException, InterruptedException
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{
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for (int i = 0; i < LOOP_COUNT; i++)
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dateService.jodaIso8601DateParse(testData[0].iso8601DateString);
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}
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@Test
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void testAmazonParseDateSerialResponseTime() {
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for (int i = 0; i < LOOP_COUNT; i++)
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@ -228,57 +193,44 @@ public class DateServiceTest extends PerformanceTest {
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}
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@Test
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void testParseIso8601DateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++) {
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final TestData myData = testData[i % testData.length];
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completer.submit(new Callable<Boolean>() {
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public Boolean call() throws ExecutionException, InterruptedException {
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DateTime dsDate = dateService.iso8601DateParse(myData.iso8601DateString);
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assertEquals(dsDate.toDate(), myData.date);
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return true;
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}
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});
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void testParseIso8601DateCorrectnessInParallel() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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DateTime dsDate = dateService.iso8601DateParse(myData.iso8601DateString);
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assertEquals(dsDate, myData.date);
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}
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});
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}
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for (int i = 0; i < LOOP_COUNT; i++)
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assertTrue(completer.take().get());
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printElapsedClockTime("testParseIso8601DateInParallel");
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executeMultiThreadedCorrectnessTest(tasks);
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}
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@Test
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void testParseAmazonDateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++)
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completer.submit(new Callable<Boolean>() {
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public Boolean call() {
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AWSAuthConnection.httpDate();
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return true;
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}
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});
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for (int i = 0; i < LOOP_COUNT; i++)
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assertTrue(completer.take().get());
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printElapsedClockTime("testParseAmazonDateInParallel");
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void testParseIso8601DatePerformanceInParallel() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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dateService.iso8601DateParse(myData.iso8601DateString);
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}
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});
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}
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executeMultiThreadedPerformanceTest("testParseIso8601DatePerformanceInParallel", tasks);
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}
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@Test
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void testParseJodaDateInParallel() throws InterruptedException, ExecutionException {
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CompletionService<Boolean> completer = new ExecutorCompletionService<Boolean>(exec);
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startClock();
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for (int i = 0; i < LOOP_COUNT; i++) {
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final TestData myData = testData[i % testData.length];
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completer.submit(new Callable<Boolean>() {
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public Boolean call() {
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Date jodaDate = jodaParseIso8601(myData.iso8601DateString).toDate();
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assertEquals(jodaDate, myData.date);
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return true;
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}
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});
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void testParseIso8601DatePerformanceInParallel_JodaAlternative() throws Throwable {
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List<Runnable> tasks = new ArrayList<Runnable>(testData.length);
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for (final TestData myData: testData) {
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tasks.add(new Runnable() {
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public void run() {
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dateService.jodaIso8601DateParse(myData.iso8601DateString);
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}
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});
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}
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for (int i = 0; i < LOOP_COUNT; i++)
|
||||
assertTrue(completer.take().get());
|
||||
printElapsedClockTime("testParseJodaDateInParallel");
|
||||
executeMultiThreadedPerformanceTest(
|
||||
"testParseIso8601DatePerformanceInParallel_JodaAlternative", tasks);
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue