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Java Tuning Tips?

Question asked by impermisha on Aug 5, 2013
Latest reply on Apr 27, 2015 by snayeem
Are there any recommended Java tuning tips?  Especially around garbage collection? Such as -XX:+UseConcMarkSweepGC or -XX:-UseGCOverheadLimit

I noticed that using perf is disabled (-XX:-UsePerfData).  I believe this may be coming from Mapr, and not something we have set, but I could be wrong.  Is that really wise to disable?