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Monitoring and control engine for multi-tiered service-level management of distributed web-application servers

  • US 20030036886A1
  • Filed: 08/20/2001
  • Published: 02/20/2003
  • Est. Priority Date: 08/20/2001
  • Status: Active Grant
First Claim
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1. A distributed monitor and control engine comprising:

  • a service-level-objective (SLO) agent, receiving measurements of an SLO objective for a web service to a web user, the measurements of the SLO objective indicating service quality for the web user accessing the web service at a web site, the SLO agent for adjusting resources at the web site to improve the measurements of the SLO objective;

    a service agent, coupled to the SLO agent, for monitoring and controlling one or more tiers at the web site, wherein a request from the web user passes through a plurality of tiers, each tier having a plurality of service components each capable of performing a tier service for the request, the request being processed by performing a series of tier services of different tiers; and

    local agents, running on nodes containing the service components, each local agent for monitoring status of a service component and for adjusting local computing resources available to the service component in response to commands from the service agent, each local agent reporting status to the service agent, wherein the SLO agent uses the service agent and local agents to adjust resources at the web site to improve measurements of the SLO objective.

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