Merge Request performance widget should show metric with most significant change
Description
With the ability for the Merge Request widget to show performance information, it would be great if this were to intelligently pick the metric with the most change and display that. Presently it only shows memory, but we are working to be able to calculate the performance delta.
Once we have the ability to calculate performance deltas (https://gitlab.com/gitlab-org/gitlab-ce/issues/27439), we should then choose the metric with the most significant change and display that, with the ability to expand to see a quick list of all metrics ordered by percent change.
Proposal
Once we have the ability to calculate performance deltas (https://gitlab.com/gitlab-org/gitlab-ce/issues/27439), we should then choose the metric with the most significant change and display that, instead of simply displaying Memory. Then, we should have an option to expand the performance widget to see a quick list of all metrics and their sparklines ordered by percent change.