13.4. Collecting and Cleaning Real-World Data

In the last few pages, we have seen how to produce or find the data necessary to quantify the performance of a system. Now we must bring together all of these data pulled from different sources both during and after a test run, and clean them in a way that makes for meaningful configuration changes and improved performance tuning.

13.4.1. Collection Preparation

If you've embraced my scripted approaches to collecting real-time data during a test run and to saving the results to an output log file, you'll be in good shape overall. Worst case, the output files simply will need to be delimited in some manner (if you failed to do this in scripting for output) so that the contents may then be poured into ...

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