Because Swoole is a framework with an independent HTTP server and mysql driver. If you get rid of this two, it is just the algorithmic power of the runtime of P

Because Swoole is a framework with an independent HTTP server and mysql driver. If you get rid of this two, it is just the algorithmic power of the runtime of PHP which factors in here. swoole is co-routine based, having a much better lifecycle and resource sharing as a consequence. Which leads to much more throughput.