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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. ------------------------------- Obviously, we need to quantify the length of the queue and the busyness of the CPU subsystem. This is the focus of the next section. So far, I have conveniently left out how to measure CPU activity or quantify how long of a queue is too long. Now is the time to delve into the specifics. Monitoring CPU activity can be effectively done by focusing on just two statistics: CPU busyness and CPU queue length. The more common term for CPU busyness is utilization. A CPU subsystem has a single run queue. 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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