Re: [aether-users] About DefaultDependencyCollector API performance

[Benjamin Bentmann <bentmann@xxxxxxxxxxxx>]

Eric wrote:

> If you put below lines:
>
> System.err.println("processing dependency: " + dependency);
>
> to this method:
>
> private void processDependency( Args args, Results results, List<RemoteRepository> repositories,
>                                      DependencySelector depSelector, DependencyManager depManager,
>                                      DependencyTraverser depTraverser, VersionFilter verFilter, Dependency dependency,
>                                      List<Artifact> relocations, boolean disableVersionManagement )
>
>
> Then run the test case DefaultDependencyCollectorTest#testCollectMultipleDependencies()
>
> You will get the output:
> processing dependency: gid:aid:ext:ver (compile)
> processing dependency: gid:aid2:ext:ver (compile)
> processing dependency: gid:aid2:ext:ver (compile)

This by itself doesn't denote a performance issue, part of the 
"processing" there is to check for a previously cached sub graph for reuse.

So again, if you suffer a concrete performance issue, consider to 
distill it into something shareable so it can be analyzed. E.g. like 
seen in testCyclicDependenciesBig() of DefaultDependencyCollectorTest or 
a pre-canned local Maven repo with stub POMs mimcing your project's 
dependency structure.


Benjamin