Translations:Wikimedia Engineering/Report/2014/July/summary/39/en

HHVM (HipHop Virtual Machine) is aimed to improve the speed of Wikimedia sites. The Beta cluster (the testing environment that best simulates our sites) is now running HHVM. The latest MediaWiki-Vagrant and Labs-vagrant (virtual machine environments that make it easier for developers to apply their code to Wikimedia sites) use HHVM by default.