I can't imagine the man-hours that went into creating this, and, from here on out, knowing that core contention is still an issue that isn't solved will allow me to waltz in to contract jobs and save companies money, e-waste, and power costs - this causes hope, joy, something like that.
In case anyone missed it, the removal of throttling in certain circumstances saved twitter ~$5mm/year, if I read it correctly. With a naive kernel patch. While it takes dedicated engineers decades of knowledge to know where to aim an intern, an intern still banged out a kernel scheduling patch that made, what I assume, is a huge difference.
Dan Luu is a gem.