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Practical Service Level Management: Delivering High-Quality Web-Based Services by Eric Siegel, John McConnell

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Instrumentation of the Server Infrastructure

Individual servers are instrumented by their manufacturers or by other companies that build an agent for a specific type of server. As with other managed elements, the element-centric instrumentation provides insight on the following:

  • Current behavior based upon CPU load, memory usage, network, and disc activity, for instance

  • Usage details, such as the number of users, threads, or processes

  • Environmental monitoring of temperature, power, and enclosure integrity

However, in a service-delivery infrastructure, such instrumentation of individual components is usually useful only after troubleshooting has narrowed the origin of a problem to a specific component. Instrumenting server tiers requires a different ...

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