Report Data Analyzer: Interpret EWLM performance data

As a workload manager (and not a capacity planning tool), the IBM Enterprise
Workload Manager focuses on real-time data and, thus, only retains performance data
covering the past 24 hours. There was a customer requirement, however, to have this data
available for later analysis. And so, the Data Hardening plug-in was added. This plug-in
allows on-the-fly dumping of performance data onto the file system. But, the
dumped data can't be directly exploited: Enter EWLM Report Data Analyzer.