The VTS Alert and Performance jobs monitor the Dashboard for changes on a regular basis. The services notify subscibers via email when attention is required.
The alerting job monitors for test breakages, fixes, and loss of service. When new data is uploaded to the database, the alerting job scans for breakages or fixes and sends emails accordingly. If tests are idle for more than 24 hours, a warning is sent out as well.
For details, visit the VTS dashboard.
Each day, the VTS Dashboard scans tests which have accompanying performance data. If so, it compares the past 24 hours to the 24 hours that preceeded it and summaries the changes in performance.