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Method for dynamically switching fault tolerance schemes

  • US 20040205373A1
  • Filed: 04/01/2004
  • Published: 10/14/2004
  • Est. Priority Date: 09/13/2002
  • Status: Active Grant
First Claim
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1. A method of dynamically switching among a plurality of fault tolerance schemes associated with a fault tolerance mechanism that executes in a distributed system, the method comprising:

  • obtaining a wait time of at least one user interface event occurring in said distributed system, said wait time including at least one of a communications time, a service time and a fault tolerance time;

    determining whether a mean of said wait time is greater than a predetermined mean wait time threshold;

    determining whether said communications time, said service time and said fault tolerance time are mutually independent when said mean of said wait time is greater than said predetermined mean wait time threshold;

    determining whether said mean of said wait time can be improved by reducing a mean of said fault tolerance time when said communications time, said service time and said fault tolerance time are mutually independent; and

    switching from a first of said plurality of fault tolerance schemes to a second of said plurality of fault tolerance schemes when said wait time can be improved by reducing said mean of said fault tolerance time.

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