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Encyclopedia of Database Systems pp 2765–2767Cite as

Physical Layer Tuning

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Definition

Tuning the physical layer entails choosing and configuring the underlying hardware and operating system to improve the performance of a database system running a given set of applications.

Historical Background

Ultimately, a database management system runs on processor and memory chips as well as secondary devices such as flash memory and disks. Trying to use those physical resources in the best way possible has been a problem since the first databases were available. Many researchers have noticed that disk capacity has been less of an issue than disk speed (or aggregate bandwidth from an entire disk array). Main memory size has always been a critical factor, because accesses to main memory are so much faster than accesses to disk. Processor speed has been important in applications that mix sophisticated computation with data access (for example in financial analysis), such computations are often handled outside the database server. New technologies have improved the...

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Recommended Reading

  1. Gray J, Kukol P. Sequential disk IO tests for GBps land speed record. MS Research Technical Report MSR-TR-2004-62.

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  2. Gray J, Shanoy PJ. Rules of thumb in data engineering. In: Proceedings of the 18th International Conference on Data Engineering; 2000.

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  3. Hall C, Bonnet Ph. Getting priorities straight: improving Linux support for database I/O. In: Proceedings of the 31st International Conference on Very Large Data Bases; 2005.

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  4. Shasha D, Bonnet P. Database tuning: principles, experiments and troubleshooting techniques. San Francisco: Morgan Kaufmann; 2002.

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Author information

Authors and Affiliations

  1. Department of Computer Science, IT University of Copenhagen, Copenhagen, Denmark

    Philippe Bonnet

  2. Department of Computer Science, New York University, New York, NY, USA

    Dennis Shasha

Authors
  1. Philippe Bonnet
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  2. Dennis Shasha
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Corresponding author

Correspondence to Philippe Bonnet .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Dep. of Computer Science, New York Univ., New York, NY, USA

    Dennis Shasha

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Bonnet, P., Shasha, D. (2018). Physical Layer Tuning. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_268

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