Getting in the Zone for Successful Scalability

Details Getting in the Zone for Successful Scalability Getting in the Zone for Successful Scalability

2008-09-15

arxiv.org/abs/0809.2541v1

Computer Science

Performance

14 pages, 15 figures. To appear in Proc. CMG International Conference, Las Vegas, Nevada, December 2008

Scientific paper

The universal scalability law (USL) is an analytic model used to quantify application scaling. It is universal because it subsumes Amdahl's law and Gustafson linearized scaling as special cases. Using simulation, we show: (i) that the USL is equivalent to synchronous queueing in a load-dependent machine repairman model and (ii) how USL, Amdahl's law, and Gustafson scaling can be regarded as boundaries defining three scalability zones. Typical throughput measurements lie across all three zones. Simulation scenarios provide deeper insight into queueing effects and thus provide a clearer indication of which application features should be tuned to get into the optimal performance zone.

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