Revisiting Log-Structured File Systems for Low-Power Portable Storage

  • Autor:

    Andreas Weissel, Holger Scherl, Philipp Janda, and Frank Bellosa

  • Quelle:

    Proceedings of the International Workshop on Software Support for Portable Storage (IWSSPS 2005), San Francisco, CA, USA, March 2005

  • Datum: 03.2005
  • Abstract:

    In this work we investigate the implica­tions on the energy consumption of different popular file systems and propose a novel, log-structured file system aiming at minimized energy consumption by avoiding expensive disk seeks and introduced laten­cies due to rotational delays. We show that the energy efficiency of file systems is heavily influenced by the underlying data layout and file organization. Guide­lines for a low power file system design are developed and evaluated with measurements of the energy con­sumption of a prototype implementation. As on-going work we investigate different approaches to free space management. We discuss design choices for the imple­mentation of a family of free space managers and their implications on energy consumption.


      author = {Andreas Weissel and Holger Scherl and Philipp Janda and Frank Bellosa},
      type = {publication},
      title = {Revisiting Log-Structured File Systems for Low-Power Portable Storage},
      booktitle = {International Workshop on Software Support for Portable Storage (IWSSPS 2005)},
      address = {San Francisco, CA},
      month = mar,
      year = 2005,
      affiliation = {University of Karlsruhe, Germany}