Java startup parameters

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The backend component is written in Java. The Java environment can be fine-tuned using several parameters which are explained here. Not every setting makes sense in every context, though.

Parameter currently in use Reasons for/against use
-XX:+UnlockExperimentalVMOptions No ...
-XX:+UseG1GC No ...
-XX:+UseConcMarkSweepGC Yes
-XX:+UseParNewGC Yes
-XX:CMSInitiatingOccupancyFraction=75 Yes
-XX:+UseCMSInitiatingOccupancyOnly Yes
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