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Brendan Gregg recently posted some interesting data about visualizing large data sets. Particularly, device utilization which is a key metric for performance analysis and capacity planning. In his post, he illustrates different ways to visualize device utilization across multiple devices, and how that utilization is changing over time. The study included over 5,000 virtual CPU nodes and over 600 physical nodes on a production cloud environment.

Data visualization

dtrace.org/blogs/brendan/2011/12/18/visu…

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