How Facebook Redesigned the HHVM JIT Compiler for Performance
In the Summer of 2013, Facebook engineers started a major redesign of the HHVM JIT compiler that brought an overall 15% reduction of CPU usage on Facebook’s web servers. Facebook engineer Guilherme Ottoni has recently described how Facebook achieved that result by backing profile-guided optimizations (PGO) into their JIT compiler.
Oct 6, 2016 ... In the Summer of 2013, Facebook engineers started a major redesign of the HHVM JIT compiler that brought an overall 15% reduction of CPU ...