Clicking on the analyse performance button on a chart will have OpsAdvisor guide you through a Statistical Process Control based analysis of the data, separating the data into different segments showing the average and range of performance in each segment.
Comments can be added to explain what may have caused the change in performance.
Once you have completed the analysis and the dataset is now stable, it will provide a brief summary report of the performance.
Uploading data now comes with an overwrite checkbox to enable you to have only new data uploaded (existing data will not be changed, including comments splits etc) or you can overwrite any of the data that exists in OpsAdvisor if it is duplicated in the new upload.
When you complete an improvement, the timestamp is recorded against the improvement and the improvement will show up on the relevant performance charts for the subsystem the improvement was made in.