Thank you, I haven't actually tried on a production site. However I'm working on using HHVM to run certain scripts like the shell/indexe on our production sites

Thank you, I haven't actually tried on a production site. However I'm working on using HHVM to run certain scripts like the shell/indexe on our production sites. So far the tests have been very promising, going down from 220sec to 154sec just by using HHVM in a single index. Ideally, as HHVM gets more stable we should be able to run production tests using the FastCGI mode.