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Related Experiment Videos

Response time variations in an online search system.

M D Cooper

    Journal of the American Society for Information Science. American Society for Information Science
    |October 8, 1983
    PubMed
    Summary
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    The National Library of Medicine

    Area of Science:

    • Bibliometrics
    • Information Science
    • Computer Science

    Background:

    • The National Library of Medicine (NLM) operates the ELHILL bibliographic search system.
    • Understanding system performance is crucial for optimizing user experience and resource allocation.

    Purpose of the Study:

    • To analyze the response time characteristics of the NLM's ELHILL system.
    • To identify factors influencing system performance during bibliographic searches.

    Main Methods:

    • Analysis of transaction data over a five-week period.
    • Calculation of average response times for typical search commands, time of day, and searched files.
    • Application of statistical tests of significance.

    Main Results:

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    • The overall average response time was found to be 2.1 seconds, indicating high system efficiency.
    • Response time variations were statistically linked to the number of concurrent users.
    • Command type and file searched did not significantly impact response times.

    Conclusions:

    • The ELHILL system demonstrates excellent response times.
    • System load, indicated by user numbers, is the primary determinant of response time variations.
    • Search command and file choice have minimal impact on system responsiveness.