Ranking by share of total database time instead of slowest single query is the bit I wish we had a few weeks ago. Our site started hanging and no query looked bad on its own: it was one ordinary listing query fired thousands of times by crawlers with odd filter combinations, and we only found it from stack dumps of the stuck workers. We run SQLite, so I can't point Culprit at it yet. Does it group statements by normalized shape, so the same query with different parameters adds up into one finding?