I'm trying to track down the reason that our builds take much longer to build under 3.0.3 rather than 3.0b1. Under 3.0.3, our build takes around 9 minutes, whereas under 3.0b1, it's 3 minutes and 30 seconds.
While using jconsole, I saw that most of the time (in 3.0.3) is spent inside DefaultProjectDependenciesResolver.java. So I downloaded the source to both 3.0b1 and 3.0.3 to see what's happening. I noticed that in 3.0.3 there are two versions of the class. One is in org.apache.maven.project, while the other is in org.apache.maven. It also appears that in 3.0.3, the former is being used. While stepping through the code, I saw that bulk of the time is spent when it reaches this statement: node = repoSystem.collectDependencies( session, collect ).getRoot(); In 3.0b1, the code does: ArtifactResolutionResult result = repositorySystem.resolve( request ); I also noticed that respositorySystem is of the RepositorySystem, and the concrete implementation is LegacyRepositorySystem. I'm assuming that this was being used while the Maven 3 was in beta until the new implementation was created? Going back to 3.0.3, the collectDependencies method lives in DefaultRepositorySystem.java which is part of org.sonatype.aether.impl.internal. This eventually calls collectDependencies inside DefaultDependencyCollector.java which is also part of org.sonatype.aether.impl.internal. I'm assuming that this is how the dependency graph is built. My question is if there is a way to make this process faster? Could there be something wrong in the way we've set up our dependencies in our project which could cause this process to be so slow? -- View this message in context: http://maven.40175.n5.nabble.com/Maven-3-builds-take-much-longer-to-run-in-3-0-3-than-in-3-0b1-tp4587257p4587257.html Sent from the Maven - Users mailing list archive at Nabble.com.
