Re^2: HotSpot JVMの落とし穴
http://d.hatena.ne.jp/sumii/20071229/p2
追試してみた。でも、やはり有意な結果にならない。
ちょっとJavaが古いけれど、それは関係ないよね。
$ uname -a Linux lethevert-svr 2.6.17-10-generic #2 SMP Fri Oct 13 18:45:35 UTC 2006 i686 GNU/Linux $ diff Fannkuch_.java Fannkuch__.java 1c1 < public class Fannkuch_ { --- > public class Fannkuch__ { $ javac -version javac 1.6.0_01 $ javac -O Fannkuch_.java $ javac -O Fannkuch__.java $ java -version java version "1.6.0_01" Java(TM) SE Runtime Environment (build 1.6.0_01-b06) Java HotSpot(TM) Client VM (build 1.6.0_01-b06, mixed mode, sharing) $ time java -server Fannkuch_ 11 > /dev/null real 0m10.434s user 0m10.445s sys 0m0.040s $ time java -server Fannkuch__ 11 > /dev/null real 0m10.402s user 0m10.425s sys 0m0.036s $ time java -server Fannkuch_ 11 > /dev/null real 0m10.398s user 0m10.437s sys 0m0.044s $ time java -server Fannkuch__ 11 > /dev/null real 0m9.677s user 0m9.669s sys 0m0.024s