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Adaptive Optimization in the Jalape ˜No Adaptive Optimization in the Jalapeno˜ JVM £ £ £ £ £ Matthew Arnold ¢¡ Stephen Fink David Grove Michael Hind Peter F. Sweeney £ IBM T.J. Watson Research Center Rutgers University ¤¦¥¨§ © ¦ ! 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INTRODUCTION =?¢? 5<#( 33¨T\0¦(*52' :058¨/'0¦ *C¥24#$0¦¦#$,=Z#f58,¥2>52,/ ¨h(*,¥ G?>T 0 Q¨/4 058( 4¦#f58* 0¦04" ¦0 : Q Q3¨0¦ *¦(*0'Cst¦uv M 0'!0¦""0,L Y :0¦ *¥258,0' {X¥,+a4¦=?,'¢¦j58*,¥2D¥2T6¥89 M6z " ,¥2¢ 52¥c-W58158*<3¨0',¥25</ 033¨ *'40 ;58?,0'52,¥25c¦""W58( 9 52, :¥j*0¦; , :¦ *¥2580'52,!5805>¦ 3 b#A,,6-*0'/ 69E6,/,52,X¦"*589 ¨58TC#$> ¨ 9$"¢2#$¦ :0 /, 0¦¦0Q¨ Q" 3¨, :¢ 520'58¨ ¥,+ewc0¦ *¦(*0' M Q¨F,0'58¨ ¥;/,0 IT¨3¨J¥8( -*¥2520¦ 58¨03j"¢2#$¦ :0 /,;¨ Q" ', :¢ 52¥,+ #A,058( ,¥:¥8(/ S0¥: T 0 Q¨/I/¢3¨0¥2¥:3¨'06 *L0 dx*,/58¨ y" ¢9 5>¥2, :¥>/¢3¨,0 58*0'540Q m,T!/ Q"¦ * 5) I58b( "/,' Q *D58 '¢ 5;¥2580¨¦ 58#$=B0K0¦"" 3¨/,058¨¦ *¥C¦#?580'U¨58¨¦ *0¦3>¥252058¨/:/ Q9 =?0¦e#< ¨ 9$"¢2#$¦ :0 /,:58(03q :0/2 ,¥e=`33f-;¥2" ¨¥2589 " 3¨058¨¦ K0¦ *: 52¢2" 6/,,6( 03<¦"*58¨ @¨F,058¨¦ <+>O4¥j0b¥8(3¨5, 0¦¦0 M /,0'52,!0'0¦"*58¨': 3 *@#$,,6-*0'/ 69E6,/,52,I"58¨ Q¨F,0'58¨ ¥,+ 58(*0¦3?{X0'/ !| {I}?¨ Q"3¨ :¢ 52¥;0'b ',¥252,K¥8¨¦ #g9 z M6z ¨/0 5@¢~5; L ,3¨" *K T 0 Q¨/C/,' Q"3¨¥Q#$ 0¦¦0+1?¢9 M 03¨0¦"6N Yst6³¦v>¨¥:0¹¥2,0/2 {½- *L ,¢3¨¦",Y0'5:58* M M6z /0(¥2XT 0 Q¨/X/ Q" 3¨058¨¦ [6/,/(¥C6(2 L0" "3¨/,0'58¨ ¢^ ¢9 B{HGb+ + 052¥2¦ L¾>,¥2,0¦/ Z¿?¢ 52¦+QG? ¨¥b"0"W¢; 586U(/,,¥ M ] /(*58¨¦ cT 0 Q¨/@/,' Q"3¨¥4 ;(*¥25>/,0¦¢#( 33¨T\-03¨0 /,@"58¨ Q¨F,0¦9 58 03¨0"WUN *DO4 0"58¨1P)"*58¨ @¨F,058¨¦ ZRUT6¥252 !*0Q m,T!/ Q"¦9 M 58¨¦ [~,/,58¨'¢ *¥2¥J=?¨58/, Q" 3¨058¨¦ '¢2,0p52L :0^6¨ Q¨F ¢ 5:#e58 03¨0"WUN * {K+fÀÁ,¨¦(*¥:"0"¥!st6>²,°vB-2¨¢xT M M6z 52'5203f¥2T6¥252, i"¢2#$¦ :0 /,+j4¦=?¢¦ T *0' Q¨/;/, @"3¨¢¥e/,0 ,¥2/¢2-X58C0 0"58¨X"58¨ Q¨F,0'58¨ p¥2T6¥252, Â0'5Q0X¨¦L3¨,¢3$+ 0¦3¨¥2K¢^6" 3¨¨5:2( 58¨ :! #A :0'58¨ p52!"¢2#A ¦"*58¨ @¨F,058¨¦ *¥ G?¨¥j"*0¦"¢?" ,¥2¢ 52¥>58`© ¥25? ,¥2/¢2"58¨ I¦#c5840¦/ ¨52,/,58( 03 -W,T¦ *X58Q¥2/";¦#j0Q"( ¢3¨TX¥2520'58¨/;/, Q" 3¨058¨¦ L :6 ¢3$+ ,5203¨¥,¨ Q" 3¨, :¢ 520'58¨ fc0¦ *!"2#$ :0¦ */b,¥8( 3¨52¥,+ G?!©¥25C=?0¦'!#@58(03 :0/2 *,¥C"¦¨ , (*¥2589rA 9EG?¨ : M G?*; 10 I/,¦ 582-(58¨ ¥Q¦#j58¨¥?"0";0 | $Ge})/,' Q"3¨0'58¨ Z58054¢3¨,a a¥8¨ Q"3¨C¥2520'58¨/\¥2580'52,¨¥;52 M / 0 a¢^ 52¢ ¥8-3¨X0'0¦"*58¨'C"58¨ Q¨F,058¨¦ Y0¦/ ¨52,/,58( C58*0'5 2000 ACM à -58p¥8( " "52¥X/¢( 2¢ 5:3¨,0'U 9E, {Ä52,/2 *¦3¨T This copy is posted by permission of ACM and may not be redis- M6z tributed. The official citation of this work is Arnold, M., Fink, S., 0 X¢ 0- 3¨,¥),¥20/2! 52:¦ 3 b#A,,6-*0'/ 69E6,/,52,I" 9 Grove, D., Hind, M., and Sweeney, P.F. 2000. Adaptive Optimization 58¨ Q¨F,0'58¨ f in the Jalapeno˜ JVM. :cV*¦?Wbi<,,2,4KB$,¢¦ 58*j , : ¥258058¨¦ C# 3¨¦=?98¦'¢2*0@¥20 Q" 3 *;52/ ¨h(,¥ à j¢AW :r¡mr¢£Q£@ ¡¤j*¥¦$,£Q¦¤<¢ ¡§¢¦¡U,¦¤<¢ 1`¨6¨© 52LU2¨'K0 0"58¨K0¦ *Y¦ 3 K#$,,6-0/2 6986,/,52o¦"*589 ¬6¬,­ ¢6$*¦bªej*I« , Minneapolis, Minnesota, October 15–19, 2000. 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