HipHop Virtual Machine, or HHVM, reduces the median page-saving time for editors from about 7.5 seconds to 2.5 seconds, and the mean page-saving time from about 6 to 3 seconds. Below, I’ll explain the technical background for HHVM on MediaWiki and some of the far-reaching benefits of this change that will go beyond the recent performance gains.
» Ori Livneh | blog.wikimedia.org