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by Craig Shallahamer Get the book here |
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Craig Shallahamer's Blog
The text below is an except from the book, Oracle Performance Firefighting, written by Craig Shallahamer of OraPub, Inc. Figures and tables are not included on this page, only their reference. To order the book in either print or PDF form, click here. ©2009, 2010 by Craig Shallahamer. This is copyrighted material. Please—Out of respect for those involved in the creation of the book and also for their familes, we ask you to respect the copyright both in intent and deed. Thank you. ------------------------------- * Dramatic performance degradation results when operating in the elbow of the curve, which means even seemingly small workload changes can bring about dramatic performance changes. This can be very frustrating to users who crave consistency and dependability. Figure 9-11. Shown is a highly abstracted response-time graph with minimal information. It is used to convey the performance situation as unacceptable and clearly in the elbow of the curve. People seem to intuitively know that being in the elbow of the curve is a bad thing. If you feel it is necessary, then show the numbers. Be ready to explain them, how they relate to performance, and how your solutions will alter the situation. Please—Out of respect for those involved in the creation of the book and also for their familes, we ask you to respect the copyright both in intent and deed. Thank you. |
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