Benchmarking PHP 7 vs HHVM - Drupal and Wordpress

[Multiple updates: I've added results for concurrencies of 1 and 10, results on bare metal vs. VMware instances, tested Drupal 8 vs Drupal 7 vs Wordpress 4.4, and I've also retested every single benchmark at least twice! Please make sure you're read through the entire post prior to contesting these benchmark results!]

tl;dr: Always test your own application, and trust, but verify every benchmark you see. PHP 7 is actually faster than HHVM in many cases, neck-in-neck in others, and slightly slower in others. Both PHP 7 and HHVM blow PHP ≤ 5.6 out of the water.

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