Also for those who enjoyed this paper, I think you will also like CMU's Prof. Mor Harchol-Balter's book[1] on queuing theory applied for designing, and analyzing performance of, computer systems.

Personally, I don't know of any other book that covers so well the application of queuing theory to computer systems.

[1] http://www.cs.cmu.edu/~harchol/PerformanceModeling/book.html