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Posted to issues@maven.apache.org by "Alexander Ashitkin (Jira)" <ji...@apache.org> on 2019/10/03 05:10:00 UTC

[jira] [Created] (MNG-6774) Speedup project graph build by paralleling operations

Alexander Ashitkin created MNG-6774:
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             Summary: Speedup project graph build by paralleling operations
                 Key: MNG-6774
                 URL: https://issues.apache.org/jira/browse/MNG-6774
             Project: Maven
          Issue Type: Improvement
          Components: Performance
    Affects Versions: 3.6.2
            Reporter: Alexander Ashitkin


h3. Motivation

In our project graph build time typically takes 14..15 seconds. 15-20 seconds penalty to run any operation is significant and could be improved. Currently it is a single threaded operation which could be improved. 
h3. Proposal
 * build graph concurrently with degree up to allowed by user with -T option

h3. Preliminary results
 * graph time improved from 14..15 to 5..6 seconds with 4 threads

h3. Rejected options
 * serialize graph state - require huge rework to introduce serialization

h3. Open design questions

* immutability in core classes to make concurrent implementation more safe

 



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