Need a math model which can lead to the best resource utilization

C1 Unit cost for pre-allocated resources
C2 Unit cost for on demand resources
C1' Unit cost for post-allocated resources
 
 
Criteria for a good model: C1' < C2 < C1
Web Page Copyright: 國立政治大學資訊科學系 連耀南 lien@cherry.cs.nccu.edu.tw  poolmodel.htm,  Wed Mar 16 00:25:21 CST 2011