ACM Transactions on Computer Systems (TOCS)
The design and implementation of a log-structured file system
SOSP '91 Proceedings of the thirteenth ACM symposium on Operating systems principles
Adaptation in natural and artificial systems
Adaptation in natural and artificial systems
Optimum reorganization points for linearly growing files
ACM Transactions on Database Systems (TODS)
Intelligent, adaptive file system policy selection
FRONTIERS '96 Proceedings of the 6th Symposium on the Frontiers of Massively Parallel Computation
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The speed of I/O components is it major limitation of the speed of all other major components in today's computer systems. Motivated by this, we investigated several algorithms for efficient and intelligent organization of files on a hard disk. Total access time may be decreased if files with temporal locality also have spatial locality. Three intelligent methods based on file type, frequency, and transition probabilities information showed up to 60% savings of total I/O time over the naive placement of files. More computationally intensive hill climbing and genetic algorithms approaches did not outperform statistical methods. The experiments were run on a real and simulated hard drive in single and multiple user environments.