java性能优化参数

国外一个高手的java启动优化参数，先记下来，不少不太明白。呵呵。windows下32位版本的jdk好像-Xmx只能到1G多

java -server -Xmx256m -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:MaxGCPauseMillis=50 -XX:+UseAdaptiveGCBoundary -XX:-UseGCOverheadLimit -XX:+UseBiasedLocking -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=15 -XX:UseSSE=3 -XX:+UseFastAccessorMethods -XX:+OptimizeStringConcat -XX:+AggressiveOpts -version