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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. ------------------------------- Figure 4-12 is an excerpt from a real-life Oracle production system's AWR report. While most Statspack and AWR reports are run with a one-hour duration, this particular report is based on only 10 minutes. Notice the number of CPUs is four. Figure 4-12. An excerpt from a production Oracle system's 10-minute duration AWR report showing operating system statistics. This output is based on the v$osstat view. * CPU consumed can be taken directly from Figure 4-12 BUSY_TIME of 17,250 hundredth seconds (hs), which is very important, since we must maintain a constant unit of time in our calculations. This means that over the 10-minute period, all processes on the database server consumed 17,250 hs, or 172.50 seconds. 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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