We have benchmarks we can perform on code and it's somewhat ambiguous where to store and surface this. Ideally there would be some database that tracks some performance metric against commits or diffs. My current thinking is to run these as a commit hook on the staging area and just add a message to diffs about the results. Phabricator has lots of applications. Would this make a reasonable addition/feature request: a database to store performance metrics tagged to commits or diffs and then a visualization of these over time or per diff/commit?