Be able to profile a maven build
--------------------------------
Key: MNG-4639
URL: http://jira.codehaus.org/browse/MNG-4639
Project: Maven 2 & 3
Issue Type: New Feature
Reporter: Baptiste MATHUS
A common problem with builds is that they can become quite long to run. As it
is a know anti-pattern for CI for example, one has the need to try and optimize
their builds.
The thing is: the current granularity isn't sufficiently precise. In fact, you
only only the time spent to build each module. This is a good start, though.
Maven currently displays something like the following (let's speak only about
maven 3):
{quote}
[INFO] Reactor Summary:
[INFO] ------------------------------------------------------------------------
[INFO] p1 ........................ SUCCESS [1:12.938s]
[INFO] p2 ........................ SUCCESS [5.750s]
[INFO] p3 ........................ SUCCESS [3:58.488s]
[INFO] p4 ........................ SUCCESS [24.437s]
[INFO] p5 ........................ SUCCESS [1.563s]
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5 minutes 46 seconds
{quote}
What would be great would be adding an option that would higher the details.
Something like -A/--analyze (--profile would be too close to -P/profile option)
would add detailed analysis, would print something like.
{quote}
[INFO] Reactor Summary:
[INFO] ------------------------------------------------------------------------
[INFO] p1 ........................ SUCCESS [1:12.938s]
clean:clean (somepkg.CleanMojo) : 10.3s
compiler:compile (...) : 50s
...
and so on
{quote}
I'm not very well aware the level of details maven 3 API could provide. So the
printing above could become irrelevant. In this case, printing a dedicated html
or so report might be a better choice.
Cheers
PS : Though I'm really not introduced into maven code, if you think it's not
too complicated, I could try and contribute on this field if I'm given some
hints or good starting points.
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