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Systems Performance: Enterprise and the Cloud by Brendan Gregg

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13. Case Study

This chapter is a systems performance case study: the story of a real-world performance issue, from initial report to final resolution. This particular issue occurred in a production cloud computing environment; I chose it as a routine example of systems performance analysis.

My intent in this chapter is not to introduce new technical content but to use storytelling to show how tools and methodologies may be applied in practice, in a real work environment. This should be especially useful for beginners who have yet to work on real-world systems performance issues, providing an over-the-shoulder view of how an expert approaches them, a commentary on what that expert might be thinking during the analysis, and why. This isn’t necessarily ...

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