P99 From 280 ms to 58 ms by Making the Queue Fair

Mon, 07 Sep 2026 19:45:00 -0700

A third-party Laravel runtime comparison put ePHPm’s worker mode at the top on throughput. It was about 19% ahead of FrankenPHP on /api/static. It was also at the bottom of the fast group on tail latency, with a P99 of 157 ms against FrankenPHP’s 57 ms. Best throughput plus the fattest tail is a shape worth chasing, because fast execution can’t produce it. Making requests faster lowers the mean and the tail. Only waiting can pull them apart. Specifically, unfair waiting.

Queueing on Luther Monson

P99 From 280 ms to 58 ms by Making the Queue Fair