# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2016-10-30 22:24:21 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/792854681475289088) RT @nicklockwood: In case you're interested, SwiftFormat runs ~6x faster with -O -whole-module-optimization than -Onone. Optimization is a…