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Method and apparatus for controlling the number of servers in a client/server system

  • US 5,974,462 A
  • Filed: 03/28/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 03/28/1997
  • Status: Expired due to Term
First Claim
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1. In an information handling system in which incoming work requests belonging to a first service class are placed in a queue for processing by one or more servers requiring other system resources, said system also having units of work assigned to one or more other service classes, a method of controlling the number of said servers, comprising the steps of:

  • defining a performance measure for each of said first and said other service classes;

    determining the positive effect on the performance measure for said first service class of adding a predetermined number of servers to said first service class;

    selecting one of said other service classes as a donor class from which to obtain the other system resources necessary to add said predetermined number of servers to said first service class;

    determining the negative effect on the performance measure for said donor service class of obtaining from said donor class said other system resources necessary to add said predetermined number of servers to said first service class; and

    adding said predetermined number of servers to said first service class only if the positive effect on the performance measure for said first service class outweighs the negative effect on the performance measure for said donor service class.

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