b) Execution times
0
200
400
600
800
1000
1200
320 400 480 560 640
AH
SH
ES
320(6) 400(8) 480(10) 560(12) 640(14)
1200
1000
800
600
400
200
0
Average Modific ation Cost
R
(
:
)
G
Number of tasks (applications) in
\
a) Modification Cost obtained with
the GH, SH, and ES heuristics
0
20
40
60
80
100
120
140
320 400 480 560 640
AH
SH
ES
Average Executi on Time [min ]
320(6) 400(8) 480(10) 560(12) 640(14)
120
100
80
60
40
20
0
140
G
Number of tasks (applications) in
\