The Metronome: A Simpler Approach to Garbage ... - Researcher - IBM

! " #$%&'( $")**+ $,-**

. $"/ #$§ . " $-&/ &&&$0 -&#&# § ! " 1$/- /.0 2 /& 0 2& # 3 $"4 5/ 60 # & $- / # 7- § . $" -0 2 8 & $&&/!0 # 3&

9- § ( 8.0 - %//- :"' "§ 9 8/ § " / #$§ &-"38§ *.0 ;$ &(

.& # &§ $ 0 ;< "- .0 < + $1 0 & $ "< & ='9 /§ &0 . &< 8 $0 & < " $ "- &&!0 ; &< " $

.& $ ;>% $ &' &&>&" $; &

.- § & 0 ( ; &/ "+0 ; & 5?-/&&< ( - / &< /< &$§ @ 0 >3< % /+< % /0 ; & 5?< $$&"- 8 + < %&/8 -4/ " 6

%//- :"§ 9 $; & - #§ ; & $- $&& $§ .8#/ 7--& $ § ;8&; && 8#='9 A§ & # 8 ; &" 7-/ / "*@ "+ &A0 < 10 ;< / &&0 &< 1 ''9='9§ @- $&AAA

'- § $#$"0 &-B &/$" § " "&' =0 " "&$?§ $&&/ "0 "" 8 $// "/ !$ § & 0 ( &/ "§ 1#80 ###""§ $ 0 -&/ "&-/8 1&/ "0 ( &/ "

(-;" 4(>+ +6 C D E F(-46

: ?= 4(>+ +6C**G: ?*E*D* C C >3-46

& 4.#&/& 1#$ 6Case 1Case 2xNormal: *(x+8)xRead Barrier: *(*(x-4)+8)§ 9?0 "0 &0 8.H- #10 9 & &-&/ C#I "/D#EI

#&&- "§ @ 1#&&- "0 2 "- / 0 # :- - ?&-- $ § #&&- "0 2) $ & - - ?0 # ( $ && 4-"6§ ( #7-- ( #! 0 ( #7-- 0 ( #! 0 #&8 18 -&& #!

( #-&Tuneru T = utilization30% 50%s = used spaceProgram (Mutator)a*(GC) = Per-GC Allocate Rate10 MB/sM = Live Data30 MB45 MB60 MBCollectort = time resolution5 msR = Tracing Rate50 MB/s

" " 8 #$§ /0 " $&& 0 > / -# $30 "/+8 &/&// 0 # & $& & $ -§ " $0 &&!8 &10 9 & !H 7- $C# - / / $ $

H- 8&(-§ 3--D§ 3-38C§ ' 0 3(-J3380 :& $"95&- H # 0 " &§ - (-&8-& C8-"§ ! &-38KCL

&-"38§ & 41'3-60 >" < 8 &" 380 =?$< " & 8 38§ $9 0 &/ -/$" " +41 5 $ 60 /- &- "87--§ %/ &"0 :&/&8 0 1/ 8 1-&&&&/ 0

*.§ 0 2 " "&0 # ! 38§ .0 # 3 $"0 2( $ $-"8& $§ 0 =1/ #!1& $ 8 !0 9 # "$-& 8& $

$ & 2& $§ - // && $§ "> ; &§ /0 & & &0 $> 3 &0 = - $&" /- -/&&/- § % $ 0 4C6( " 8-& $ 0 46- &1/ 7- < :& $ 8/-&"< /='9& / "" "< &- - $/"# $ &*< -/& $*

-§ . $" 3&$/ " § !/ &" & #$§ $ && - 1$/0 >/ " "-0 4-" 6&0 ! /- &-/&&/- # 7- "&