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Get more speed with your MAVEN2 build

Get more speed with your MAVEN2 build

We had serious performance problems with MAVEN in our environment. It seems to be a recurrent problem
for MAVEN… anyway I did came through the following changes…the 2.0.9.db1 #Maven2 patch make really
Maven fly!

General settings to speed up #Maven:

  • More memory for #Maven process, change the launcher of eclipse to set MAVEN_OPTS like this:
    -DMAVEN_OPTS=”-Xms64m –Xmx128m”
  • Use the latest version of #Maven, but be careful of regressions! the latest as for today is 2.0.9
  • There is a patch available for #Maven 2.0.9, which speed up build by 40%. It is just simply day and
    night! try it, you’ll love it! Basically Don Brown alter MAVEN2 2.0.9 to

General settings to speed up #Eclipse:

  1. Use javaw.exe to start eclipse and not java.exe (more for console base program with a lot of feedback),
    while javaw.exe is more for graphical environment.
  2. Aggressive JIT and double core processors should use:
    -XX:-UseParallelGC -XX:+AggressiveOpts -XX:-UseConcMarkSweepGC -XX:+UseFastAccessorMethods
  3. Give more memory, MORE MEMORY for eclipse, on a 4GB machine, these are my settings:
    -Xms768m -Xmx1024m -XX:MaxPermSize=256m
  4. Reduce the number of warning reported by eclipse per compilation unit (class), default is 100, reduce it to 10.
    It help nobody to see a workspace slowing down because of too many warning logging.
    Remove the warnings instead 😉
  5. SVN console with subversive is too verbose as default, go to eclipse preferences – Team – SVN – Console.
    Logging SVN errors should be enough.
  6. Use a Defragmenter! NTFS fragment fast with so many small files in workspace, every 2 week is a good practice.
  7. I am using Java 1.6u10 (BETA!) and have experience no crash till now,
    being on the edge can be costly in time through. #Maven forking should benefit from the reduce java kernel
    size and bootstrap time
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