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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. ------------------------------- One of the best (and most interesting) ways to learn how to solve performance problems is to devise ways to create the problem! Referring to Figure 6-9, there are three classic ways to slow CBC performance: * If we decrease the number of CBCs (for example, remove CBC 04 in Figure 6-9), the average chain length will grow, increasing concurrency on the remaining chains and also increasing CBC scan time. * If buffer cloning becomes intense, then the popular chain will become very long, increasing CBC scan time. 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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