Matthias Bünger created MNG-8725:
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Summary: Option for "-T" argument: Use max cores minus 1
Key: MNG-8725
URL: https://issues.apache.org/jira/browse/MNG-8725
Project: Maven
Issue Type: Improvement
Affects Versions: 3.9.9
Reporter: Matthias Bünger
You can enable parallel builds in Maven using the {{-T}} argument and pass the
number of threads or threads per core (see:
https://cwiki.apache.org/confluence/display/MAVEN/Parallel+builds+in+Maven+3 ).
The Maven Daemon uses the maxinum number of cores minus 1 per default for max
effiencey without blocking the system.
Sadly there is no option for the Maven core to behave like this. So each
developer has either to have the same number of cores available (which is often
not the case) or pass his/her individual number of threads on each call.
It would be great to have a built-in argument to use maximum -1 cores like the
Daemon does.
Note: I write cores all the time, because threads in this context are hardware
threads (and no virtual threads possible with Java 21 and I don't want to mix
this even that Maven is not yet on Java 21)
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