Tomcat Maven Plugin and Apache Tomcat post 6.0.29

Last Updated on Mercredi, 21 mars 2012 08:36 Written by Henri Gomez Vendredi, 11 mars 2011 12:56

If you’re using the Tomcat Maven Plugin and want to use post 6.0.29  Apache Tomcat, ie latest 6.0.32, you should update your pom to handle a change in artifact.

Up to 6.0.29, Eclipse JDT compiler was bundled as jasper-jdt :

<dependency>
              <groupId>org.apache.tomcat</groupId>
              <artifactId>jasper-jdt</artifactId>
              <version>6.0.29</version>
            </dependency>

With 6.0.30, Apache Tomcat team started to bundle Eclipse JDT directly:

<dependency>
  <groupId>org.eclipse.jdt.core.compiler</groupId>
  <artifactId>ecj</artifactId>
  <version>3.5.1</version>
</dependency>

As consequence, org.apache.tomcat/jasper-jdt artifact didn’t exist anymore after release 6.0.29.

Jasper JDT up to 6.0.29

For Tomcat Maven Plugin, you should update the suggested pom like this :

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>tomcat-maven-plugin</artifactId>
                    <version>1.2-SNAPSHOT</version>
                    <dependencies>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>catalina</artifactId>
                            <version>${tomcat.version}</version>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>catalina-ha</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>tribes</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>el-api</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>jasper</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>jasper-el</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.eclipse.jdt.core.compiler</groupId>
                            <artifactId>ecj</artifactId>
                            <version>3.5.1</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>jsp-api</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>servlet-api</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>coyote</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                        <dependency>
                            <groupId>org.apache.tomcat</groupId>
                            <artifactId>dbcp</artifactId>
                            <version>${tomcat.version}</version>
                            <scope>runtime</scope>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </pluginManagement>

Notice: An updated version of Tomcat Maven Plugin 1.2-SNAPSHOT has been released, this hack is no more necessary

OS/X – OpenJDK 6 vs Apple JDK 6

Last Updated on Lundi, 8 novembre 2010 11:58 Written by Henri Gomez Lundi, 8 novembre 2010 12:34

From finished building OpenJDK 6 on OS / X Snowleopard, I wanted to test just to see how he behaved towards the implementation of Apple.
I used a development version of MacPorts (see it trac) that appears very promising and got OpenJDK 1.6.0-b20.


openjdk version "1.6.0"
OpenJDK Runtime Environment (build 1.6.0-b20)
OpenJDK 64-Bit Server VM (build 17.0-b16, mixed mode)


A Java application with GUI under OS/X – OpenJDK

First test was to launched a big application like Eclipse under OS/X with OpenJDK.
I selected OpenJDK 6 as default VM by adding the properties file in this eclipse.ini Eclipse.app / Contents / MacOS / eclipse.ini


-vm
/opt/local/share/java/openjdk6/bin/java


It worked pretty well :

A big thank you to SWT / Cocoa since there are still problems with AWT and OS / X

Speed and stability of OpenJDK

My test system is an Apple Mac Book Pro (MacBookPro5,1) with Intel Core 2 Duo 2.66Ghz and 4Gb DDR3 1067Mhz.

DaCapo Benchmarks

I do some tests with DaCapo 9.12-bach, discarding batik test, this one requiring a working AWT/Swing support .

Bench tests launched with -n X, ie (java -jar dacapo-9.12-bach.jar -n 10 pmd)

Some tests failed under OpenJDK 6, related on Tomcat / IO but as we can see in next section, Tomcat 6 or 7 worked with OpenJDK.

IO Benchs with ApacheBench and Tomcat6/7

Then I wanted to see the speed of the JVM under IO load and why I made a little stress test two well-known applications, Tomcat 6 and 7.
I used ApacheBench to request 1000000 time a simple URI (/examples/servlets/servlet/RequestInfoExample), with 100 concurrents clients.

ApacheBench and Tomcat were on the same machine, to avoid network bottleneck.
Activity Monitor show a CPU load of 120% for Java and 20% for ab

Here also OpenJDK 6 perform well even slighty better than Apple own implementation.

Apache 6.0.29 / Open JDK 6

Server Software: Apache-Coyote/1.1
Server Hostname: localhost
Server Port: 8080

Document Path: /examples/servlets/servlet/RequestInfoExample
Document Length: 715 bytes

Concurrency Level: 100
Time taken for tests: 62.456 seconds
Complete requests: 1000000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 1000000
Total transferred: 868001736 bytes
HTML transferred: 715001430 bytes
Requests per second: 16011.35 [#/sec] (mean)
Time per request: 6.246 [ms] (mean)
Time per request: 0.062 [ms] (mean, across all concurrent requests)
Transfer rate: 13572.15 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 3
Processing: 0 6 3.1 6 123
Waiting: 0 6 3.1 6 123
Total: 0 6 3.1 6 123

Percentage of the requests served within a certain time (ms)
50% 6
66% 6
75% 7
80% 8
90% 9
95% 11
98% 13
99% 15
100% 123 (longest request)


Apache 7.0.4beta / Open JDK 6

Server Software: Apache-Coyote/1.1
Server Hostname: localhost
Server Port: 8080

Document Path: /examples/servlets/servlet/RequestInfoExample
Document Length: 683 bytes

Concurrency Level: 100
Time taken for tests: 70.360 seconds
Complete requests: 1000000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 1000000
Total transferred: 855000855 bytes
HTML transferred: 683000683 bytes
Requests per second: 14212.64 [#/sec] (mean)
Time per request: 7.036 [ms] (mean)
Time per request: 0.070 [ms] (mean, across all concurrent requests)
Transfer rate: 11867.01 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 3
Processing: 0 7 6.6 6 379
Waiting: 0 7 6.6 6 379
Total: 0 7 6.6 6 379

Percentage of the requests served within a certain time (ms)
50% 6
66% 7
75% 8
80% 9
90% 11
95% 12
98% 14
99% 15
100% 379 (longest request)


Apache 6.0.29 / Apple JDK 6

Server Software: Apache-Coyote/1.1
Server Hostname: localhost
Server Port: 8080

Document Path: /examples/servlets/servlet/RequestInfoExample
Document Length: 715 bytes

Concurrency Level: 100
Time taken for tests: 63.082 seconds
Complete requests: 1000000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 1000000
Total transferred: 868005208 bytes
HTML transferred: 715004290 bytes
Requests per second: 15852.36 [#/sec] (mean)
Time per request: 6.308 [ms] (mean)
Time per request: 0.063 [ms] (mean, across all concurrent requests)
Transfer rate: 13437.43 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 4
Processing: 0 6 3.0 6 125
Waiting: 0 6 3.0 6 125
Total: 0 6 3.0 6 125

Percentage of the requests served within a certain time (ms)
50% 6
66% 6
75% 7
80% 7
90% 9
95% 11
98% 13
99% 15
100% 125 (longest request)


Apache 7.0.4beta / Apple JDK 6

Server Software: Apache-Coyote/1.1
Server Hostname: localhost
Server Port: 8080

Document Path: /examples/servlets/servlet/RequestInfoExample
Document Length: 683 bytes

Concurrency Level: 100
Time taken for tests: 72.992 seconds
Complete requests: 1000000
Failed requests: 0
Write errors: 0
Keep-Alive requests: 1000000
Total transferred: 855067545 bytes
HTML transferred: 683053957 bytes
Requests per second: 13700.05 [#/sec] (mean)
Time per request: 7.299 [ms] (mean)
Time per request: 0.073 [ms] (mean, across all concurrent requests)
Transfer rate: 11439.91 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.0 0 6
Processing: 0 7 8.7 7 770
Waiting: 0 7 8.7 7 770
Total: 0 7 8.7 7 770

Percentage of the requests served within a certain time (ms)
50% 7
66% 8
75% 8
80% 9
90% 11
95% 12
98% 14
99% 16
100% 770 (longest request)


Conclusion

OpenJDK 6 appears very promising and Apple’s decision to suspend the maintenance of Java on its next OS / X will not be so bad.

Hoping now that porting AWT / Swing and Cocoa to appear quickly in the Project OpenJDK / BSD

Maven JMeter plugin

Last Updated on Jeudi, 4 novembre 2010 06:14 Written by Henri Gomez Jeudi, 4 novembre 2010 06:13

While playing with JMeter Maven plugin, I got some problems :

First the official Jakarta plugin is pretty old and no more maintened.

So you should get a new one, from GoogleCode
This project moved to GitHub

Great project but it miss 2 dependencies, commons-logging and soap
Without commons-logging your tests may fail and you could see :

Error in NonGUIDriver java.lang.NullPointerException
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] There were test errors

The fix is easy, get the plugin project and add the following dependencies in it :

		<dependency>
			<groupId>soap</groupId>
			<artifactId>soap</artifactId>
			<version>2.3.1</version>
		</dependency>

		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>

Just rebuild and install (or deploy), this updated plugin, may be changing it’s version from 1.0 to 1.1-SNAPSHOT to avoid conflict with current one.

Full pom.xml is here :

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>org.apache.jmeter</groupId>
	<artifactId>maven-jmeter-plugin</artifactId>
	<packaging>maven-plugin</packaging>
	<version>1.0</version>
	<name>Maven JMeter Plugin</name>
	<url>http://jakarta.apache.org/jmeter</url>

	<dependencies>
		<dependency>
			<groupId>ant</groupId>
			<artifactId>ant</artifactId>
			<version>1.6</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>1.2</version>
		</dependency>
		<dependency>
			<groupId>org.apache.maven</groupId>
			<artifactId>maven-plugin-api</artifactId>
			<version>2.0</version>
		</dependency>
		<dependency>
			<groupId>org.apache.maven</groupId>
			<artifactId>maven-project</artifactId>
			<version>2.0.9</version>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.apache.jmeter</groupId>
			<artifactId>jmeter</artifactId>
			<version>2.3</version>
		</dependency>

		<dependency>
			<groupId>soap</groupId>
			<artifactId>soap</artifactId>
			<version>2.3.1</version>
		</dependency>

		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>

		<dependency>
			<groupId>org.apache.jmeter</groupId>
			<artifactId>jmeter</artifactId>
			<version>2.3</version>
		</dependency>
		<dependency>
			<groupId>org.apache.maven.wagon</groupId>
			<artifactId>wagon-webdav</artifactId>
			<version>1.0-beta-2</version>
		</dependency>
	</dependencies>
	<distributionManagement>
		<repository>
			<id>central</id>
			<name>Gestalt Central Repo</name>
			<url>dav://artifactory.int.gestalt-llc.com:8080/archiva/repository/repo</url>
		</repository>

	</distributionManagement>

	<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.0.2</version>
				<configuration>
					<source>1.5</source>
					<target>1.5</target>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-surefire-plugin</artifactId>
				<version>2.3</version>
			</plugin>
		</plugins>
	</build>
</project>

I hope this plugin will soon include these fixes and update JMeter to its latest version, 2.4