Program Behavior: Models and Measurements
Program Behavior: Models and Measurements
Digital Signal Analysis
Determining WWW User's Next Access and Its Application to Pre-fetching
ISCC '97 Proceedings of the 2nd IEEE Symposium on Computers and Communications (ISCC '97)
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This paper describes an adaptation of standard Fourier analysis techniques to the study of software-cache interactions. The cache is viewed as a "black box" boolean signal generator, where "ones" correspond to cache misses and "zeros" correspond to cache hits. The spectrum of this time sequence is used to study the dynamic characteristics of complex systems and workloads with minimal a priori knowledge of their internal organization. Line spectra identify tight loops accessing regular data structures, while the overall spectral density reveals the general structure of instruction localities.