MMT: Exploiting Fine-Grained Parallelism in Dynamic Memory Management! !Devesh Tiwari, Sanghoon Lee, James Tuck and Yan Solihin! ARPERS Research Group ! Electrical and Computer Engineering! NC State University !
Deallocation Time Allocation Time Computation Time
&
1
>+,?&time in ! malloc/free()!
Execution Time
0.8
0.6
0.4
0.2
0 cfrac
deltaBlue
gawk
mst
perimeter
roboop
treeadd
Average
Trends in Heap Management! •!Ubiquitous but expensive!
/595:;&+,?&time in ! malloc/free()!
Execution Time
0.8
0.6
0.4
0.2
0 cfrac
deltaBlue
gawk
mst
perimeter
roboop
treeadd
Average
Trends in Heap Management! •!Ubiquitous but expensive! •!If security checks enabled: overheads increase (21% on average)!
/595:;&+,?&time in ! malloc/free()!
Execution Time
0.8
0.6
0.4
0.2
0 cfrac
deltaBlue
gawk
mst
perimeter
roboop
treeadd
Average
Trends in Heap Management! •!Ubiquitous but expensive! •!If security checks enabled: overheads increase (21% on average)! •!Increasingly used due to object oriented languages! /595:;&
