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AdrianHu99 / NOTES

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JVM performance options #58

Closed AdrianHu99 closed 5 years ago

AdrianHu99 commented 5 years ago

https://www.slideshare.net/DmitriyDumanskiy/jvm-performance-options-how-it-works

AdrianHu99 commented 5 years ago

-XX: +DoEscapeAnalysis 15-20% performance improvements

AdrianHu99 commented 5 years ago

-XX:AutoBoxCacheMax 默认范围是-128 ~ 127，如果把该参数调大之后，比如提升到20000，虽然牺牲一点内存，但是服务整体性能可以提升不少

AdrianHu99 commented 5 years ago

-XX: +OptimizeStringConcat -XX: +OptimizeFill -XX: +UseCompressedOops