Planning for CPU Resources
Planning for future processing resources can be a difficult task because there are so many variables that affect CPU performance. Some factors to consider are as follows:
Minimum CPU requirements for each application
Concurrency capabilities of each application
Load averages during peak usage
Performance during peak usage
The sections that follow discuss some of the most useful and generally applicable tools and methods you can use to analyze these and other factors affecting CPU resources.
Analyzing CPU Usage Trends
Tools like sar can help you collect CPU usage data and discover trends. For example, a server whose CPU idle time plummets down to 2% every day between 7:00 p.m. and 9:00 p.m. is obviously at peak usage during ...
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