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Method and apparatus for monitoring a subsystem within a distributed system for providing an archive of events within a certain time of a trap condition

  • US 5,774,377 A
  • Filed: 07/30/1991
  • Issued: 06/30/1998
  • Est. Priority Date: 07/30/1991
  • Status: Expired due to Fees
First Claim
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1. A method of automatically monitoring the behavior over time of a plurality of interacting subsystems of a distributed system, the method comprising the following steps carried out automatically by the interacting subsystems:

  • collecting data respecting a first subsystem by using data collection means that is local to the first subsystem;

    time-stamping the data;

    placing the data in a local buffer in the first subsystem;

    detecting occurrence of a trap condition by means of a sensor that is local to a second subsystem;

    determining, locally in the second subsystem, at what time the trap condition occurs;

    notifying the first subsystem of the occurrence of the trap condition and its time of occurrence; and

    archiving any data that have been placed in the local buffer and that carry a time-stamp within a desired interval of the time of the occurrence of the trap condition and thereby providing a history of the first subsystem during the desired time interval.

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