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The Software-Cache Connection

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2 Author(s)
Voldman, J. ; IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598, USA ; Hoevel, Lee W.

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.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:25 ,  Issue: 6 )