HipHop for PHP: More Optimizations for Efficient Servers

What this post added

This post details further optimizations to HipHop for PHP, building on its initial adoption. Key improvements include: reducing serialization/unserialization costs in APC, optimizing JSON encoding, minimizing reference counting operations, creating more compact binary code to improve instruction cache performance, enhancing memory allocation with jemalloc, and speeding up the compilation process through parallelization and community contributions. These changes resulted in a 70% increase in web server throughput on the same hardware.