caiwei-ebay edited a comment on pull request #158:
URL: https://github.com/apache/maven-resolver/pull/158#issuecomment-1069797740


   > Am getting consistently slower results (2nd, 3rd run), but unsure is it 
skipper or BFS that is on master?
   > 
   > @caiwei-ebay could you tell more about those projects you refer to? I 
guess they are not open (if they are, please point us on them), but I wonder 
what they have in common: size (as in module count/reactor size)? are they 
using version ranges? Are they having unused dependencies (as you refer to 
"make dep tree clean, remove unused dependencies")...?
   
   @cstamas 
   
   Thanks for the test report.
   The projects I mentioned in previous comment are company internal consuming 
internal artifacts from an internal maven repository based on Artifactory. The 
most common issue is heavy dependencies + different exclusions are widely used 
in project which make maven resolve duplicate node again and again. As to the 
heavy dependencies, they are formed after 10 years development with more and 
more dependencies added into their poms :). The maven build usually takes >5 
minutes with tests skipped, this is why I say they are complex projects. I'm 
not sure if I can find a opensource project that can reproduce such issue, let 
me try.
   
   Regarding the test method, could you please build mvn bfs with code checked 
out before the "BFS approach" commit and run the performance test? This can 
help narrow down the root causes, either because of the BFS commit or commits 
before BFS.


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