The reason why swoole is higher than go

Development efficiency

Go language is essentially a static language, with slightly worse development efficiency, but stronger performance , more suitable for the development of underlying software (recommended learning: swoole video tutorial)

Swoole uses PHP language, dynamic script language, has the best development efficiency, and is more suitable for the development of application software

IO model

Go language uses single-threaded eventloop to process IO events, multi-threads implement coroutine scheduling, and execute user-level code

swoole uses multi-threaded eventloop processing IO events, multi-process execution of user-level php code

Go's processing of IO events is single-threaded, unable to utilize multi-core, and the throughput is slightly weaker than swoole

In the actual TCP/UDP intensive IO stress test, swoole performed slightly better than go

Go coroutine (goroutine) runs on multiple threads, and threads can share stacks and File descriptors are more powerful and have more advantages in implementing connection pools and concurrency libraries. An additional problem is that there is a data synchronization problem, and users need to consider locking themselves.

Swoole's user code runs in a multi-process environment, without locking issues to consider. But there is no direct access to memory and resources. It is necessary to use the Task process to achieve transfer.

Language performance

Go language is statically compiled, the performance of the language itself greatly exceeds that of PHP, and intensive computing has more advantages

php is dynamically interpreted The language performance is poor and not suitable for intensive calculation programs

Using C extensions to implement intensive calculation and large-scale call codes can solve some PHP performance problems

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