Hi,
laredotornado-3 wrote:
> Hi,
>
> I’m using Maven 3.2.3, Spring 3.2.11.RELEASE, JUnit 4.11, Java 6, and the
> Surefire/Failsafe 2.17 plugins. I’m trying to figure out why when running
> a couple of modules in parallel, it takes much longer than when I run them
> individually. I’m trying to figure out ways to speed up my build. I have
> this in my parent pom …
>
> <modules>
> <module>core</module>
> …
> <module>module-x</module>
> <module>module-y</module>
> </modules>
>
> When I run “mvn clean install -T 4”, modules “module-x” and “module-y” run
> in parallel. Both have a number of integration tests, all using
>
> @RunWith(SpringJUnit4ClassRunner.class)
> @ContextConfiguration({ "classpath:test-context.xml" })
> public class MyServiceIT
> {
>
> Below are my surefire/failsafe configurations …
>
> <plugin>
>
<groupId>org.apache.maven.plugins</groupId>
>
> <artifactId>maven-surefire-plugin</artifactId>
> <version>2.17</version>
> <configuration>
> <reuseForks>true</reuseForks>
> <argLine>-Xmx2048m
> -XX:MaxPermSize=512M </argLine>
>
> <skipTests>${skipAllTests}</skipTests>
> </configuration>
> </plugin>
> <plugin>
>
<groupId>org.apache.maven.plugins</groupId>
>
> <artifactId>maven-failsafe-plugin</artifactId>
> <version>2.17</version>
> <configuration>
> <reuseForks>true</reuseForks>
> <argLine>-Xmx4096m
> -XX:MaxPermSize=512M </argLine>
>
> <skipTests>${skipAllTests}</skipTests>
> </configuration>
> <executions>
> <execution>
> <goals>
>
> <goal>integration-test</goal>
>
<goal>verify</goal>
> </goals>
> </execution>
> </executions>
> </plugin>
>
> When I run the tests in parallel, the modules take 11 minutes and 13
> minutes, respectively, to run. However, running them concurrently
> (without the “-T” option), they execute in 6 minutes and 9 minutes,
> respectively. I’m confused about why they take so much longer to run when
> they both run at the same time and was hoping some folks could suggest
> some ways I can troubleshoot this further.
How much memory do you have? Your test processes take quite a lot and
executing them in parallel might simply activate disk swapping.
- Jörg
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