In service-oriented distributed systems, server applications may be invoked by multiple clients. Such applications can utilize multicore architectures and threading techniques to improve service response time and to reduce resource contention. In Fall 2011, Intel’s Thread Building Blocks (TBB) technique is discussed in the class for server application design. TBB provides straightforward ways of introducing performance threading, by turning synchronous calls into asynchronous calls and converting large methods (threads) into smaller ones. To demonstrate the performance impact, a program that validates the Collatz conjecture will be used to evaluate the performance in single core and multicore environments to measure the speedup and efficiency.