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Date: Wed June 30, 2010 Now available: Recording and Slides With over 30 application performance management (APM) tool vendors offering scores of products, buyers face hundreds of confusing choices. Compounding the problem, the lack of a common taxonomy, or standard APM nomenclature, makes cross-vendor product comparisons especially challenging. To [...] The May 12, 2010 Apdex webinar material is available. Service Level Management (SLM) is the art and science of keeping application services running properly once in production. In this live webinar Peter Sevcik, Executive Director of the Apdex Alliance, described how Apdex works and provides a key performance indicator (KPI) that supports each layer of [...] The Apdex method can play a useful role in any SLM process. But it is not the whole solution. Apdex is certainly a very useful tool when you have collected measurements and need a simple way to show how well those measurements reflect your goals. But first you have to decide what those goals should [...] Webinar Date: Wednesday, May 12, 2010 Overview Speaker: Peter Sevcik, Executive Director Apdex Alliance Service level management (SLM) is the art and science of keeping application services running properly once in production. The key to successful SLM is the ability to use metrics that are linked to the [...] My previous post focused on the contribution of the Database Administrator (DBA) to application performance. Even so, application performance depends upon many factors, some of which are beyond the control of even the most dedicated DBA. So if you were thinking of relying on your DBA to fix everything, this week’s performance principle provides is [...] The annual Computer History Museum Fellow Awards program publicly recognizes individuals of outstanding merit who have significantly contributed to advances in computing technology or applications, and to the evolution of the information age. Fellows may have worked in such diverse fields as hardware, software, networking, computer science, business, education, public service, or journalism, but they [...] In recent years, much has been written about the value of use cases and scenarios for capturing functional requirements; by comparison, their usefulness for performance management has received scant attention . An application scenario defined for performance management purposes: Involves a known fixed workload If Sir Isaac Newton were stating the laws of computer systems performance, his first law would surely have been: The graph of performance continues in a straight line unless the force of some external event causes it to change. Not knowing what changed is a serious impediment to problem diagnosis. How does performance suddenly become “abnormal”? Of [...] Apdex is a simple formula that converts many performance values into an easy to understand 0-to-1 performance index. Defining the target application response time T and accurately interpreting the result (the score) requires some methodology–and that methodology should reflect how you plan to use Apdex. There are three ways to use Apdex: to do tactical [...] |
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