There are big performance problems when viewing JUnit reports and the number of tests have been grown. Sometimes it takes more than one minute to display the test results completely.

Steps to reproduce:

1. Take a jenkins job with about 500 tests.
2. Execute the tests (click the build button of the job).
3. Add 10 packages with 10 tests within.
4. Execute the tests again.
5. View the test results, which takes a long time. The content is partly displayed at once and after a while the page is loaded completely. This happens on every access to a test result page which tests have a big delta to the last job run.

In my humble opinion, I would suggest to cache the test result pages on first request or even better before the first request.

Generally it was nice, if Jenkins would provide an option to cache pages which are generated from XML (like JUnit reports or other reports from plugins like FindBugs, Open Tasks, ...)