I have been using harbormaster.sendmessage to report on test results and I noticed two things for our projects that have a lot of tests.

Oh, a lot means about 50,000.

1. reporting the tests into phabricator was so slow that our nginx timed out.
2. loading diff pages that have the tests on them take ~10-20 seconds to load

How can we improve the performance of this?

• can I add an index to the db?
• is the data fundamentally structured assuming small numbers of tests?