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Tuning I/O Subsystem: A Key Component in RDBMS Performance Tuning

Author

Listed:
  • Hitesh Kumar SHARMA

    (University of Petroleum and Energy Studies, India)

  • Christalin NELSON. S

    (University of Petroleum and Energy Studies, India)

  • Sanjeev Kumar SINGH

    (Galgotia University Noida, India)

Abstract

In a computer system, the fastest storage component is the CPU cache, followed by the system memory. I/O to disk is thousands of times slower than an access to memory. This fact is the key for why you try to make effective use of memory whenever possible and defer I/Os whenever you can. The majority of the user response time is actually spent waiting for a disk I/O to occur. By making good use of caches in memory and reducing I/O overhead, you can optimize performance. The goal is to retrieve data from memory whenever you can and to use the CPU for other activities whenever you have to wait for I/Os. This paper examines ways to optimize the performance of the system by taking advantage of caching and effective use of the system's CPUs.

Suggested Citation

  • Hitesh Kumar SHARMA & Christalin NELSON. S & Sanjeev Kumar SINGH, 2016. "Tuning I/O Subsystem: A Key Component in RDBMS Performance Tuning," Database Systems Journal, Academy of Economic Studies - Bucharest, Romania, vol. 7(1), pages 3-11, August.
    • Handle: RePEc:aes:dbjour:v:7:y:2016:i:1:p:3-11
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    Keywords

    Tuning; I/O; RDBMS;
    All these keywords.

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