Analysis of Steady-State Segment Storage Utilizations in a Log-Structured File System with Least-Utilized Segment Cleaning

Copyright [©] (1996) by Association for Computing Machinery, Inc. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distrubuted for profit or commericial advantage. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee.

        The steady-state distribution of storage utilizations of segments in a log-structured file system with least-utilized (greedy) segment cleaning is found using analytic methods. Furthermore, it is shown that as the number of segments increases, this distribution approaches a limiting continuous distribution, which is also derived. These results could be useful for preliminary preformance analysis of LFS-type system designs prior to the development of detailed simulation models of actual implementation.

By: John T. Robinson

Published in: Operating Systems Review, volume 30, (no 4), pages 29-32. in 1996

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