CODEWITHSUNDEEP
javamaven
Steve P.
Steve P.

Reputation: 14699

Changing java heap size via maven

I'm using the following as a means to determine if changing the java heap size via adding:

export MAVEN_OPTS=-Xmx1024m

to my bash_profile actually does what I want it to do (I'm on mac OS 10.9.3 if that matters).

    Runtime rt = Runtime.getRuntime();
    long totalMem = rt.totalMemory();
    long maxMem = rt.maxMemory();
    long freeMem = rt.freeMemory();
    double megs = 1048576.0;

    System.out.println ("Total Memory: " + totalMem + 
                        " (" + (totalMem/megs) + " MiB)");
    System.out.println ("Max Memory:   " + maxMem + 
                        " (" + (maxMem/megs) + " MiB)");
    System.out.println ("Free Memory:  " + freeMem + 
                        " (" + (freeMem/megs) + " MiB)");

Even after recompiling/assembling via maven, none of the above change. Is there something else that I need to do for this to take effect? NB: I sourced my bash_profile after adding the export, and when I execute:

echo $MAVEN_OPTS

it is accurate.

Upvotes: 1

Views: 390

Answers (1)

Jigar Joshi
Jigar Joshi

Reputation: 240860

export MAVEN_OPTS=-Xmx1024m

is passed to maven's jvm and it doesn't apply on the application you compile/launch using maven

You still need to pass this argument explicitly to JVM of your application

Upvotes: 2

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