The GlastRelease Reports page collects the reports on system test results for notable versions of the GlastRelease package. The system tests are located here. Some useful information about the system test histograms can be found here (somewhat out-of-date). (To add a report, simply add a page and label it with systests_reports.)
You may also be interested in the GlastRelease Updates page which gives an overview of software updates by release tag.
Questions? See instructions for running the tests and other details of the test scheme here.