> - GitLab 9.3 added the [numeric comparison](https://gitlab.com/gitlab-org/gitlab-ce/issues/27439) of the 30 minute averages.
Developers can view the performance impact of their changes within the merge
request workflow. When a source branch has been deployed to an environment, a sparkline and numeric comparison of the average memory consumption will appear. On the sparkline, a dot
indicates when the current changes were deployed, with up to 30 minutes of
performance data displayed before and after. The comparison shows the difference between the 30 minute average before and after the deployment. This information is updated after