People really use HHVM? It's crap software that rarely works, even if by some miracle it gets compiled. It's unstable, lacks features, it's poorly documented and I won't even start what a nightmare it is to create extensions for it. PHP7 is near its performance, but it comes with all the stability and with a bunch of smart people working on it, unlike Facebook people who are at best mediocre engineers. Anyone running serious website that makes them money would never even think of installing HHVM. Also, benchmarks are ran on the same machine where the http server is which is dumb beyond any reason. I would rather run PHP 4 than HHVM, it's a piece of shit and will always remain, like most Facebook's products.