I liked HHVM vs PHP-FPM because you don't have to one fat process per concurrent request. But disliked it because not much actually ran on it without tweaking.

I liked HHVM vs PHP-FPM because you don't have to one fat process per concurrent request. But disliked it because not much actually ran on it without tweaking. If you just have a bunch of random CMS sites to host then forget it. (this was about 2 years ago)