[ahh]

https://research.google/pubs/pub50370/ gives more up to date information, as does the slide deck here: https://docs.google.com/presentation/d/1taP_gqeRE1XGB2td7f32... (We get down to 4% on the graph on slide 3.)

It's far below 10% now (thanks to the hard work of a lot of people), and Google actually gotten to the point where we chose to spend _more_ time in malloc to make overall efficiency higher.