環(huán)境說明：
vm下
OS:centos 7 4核心8G

使用ab測試，并發(fā)1000，循環(huán)10次；

一下數(shù)據(jù)取最好結(jié)果：
當(dāng)event_loop為默認(rèn)的libevent時(shí)：

Requests per second:    1644.04 [#/sec] (mean)
Time per request:       608.258 [ms] (mean)
Time per request:       0.608 [ms] (mean, across all concurrent requests)
Transfer rate:          194.27 [Kbytes/sec] received

當(dāng)event_loop為\Workerman\Events\Swoole::class時(shí)

Requests per second:    2063.67 [#/sec] (mean)
Time per request:       484.574 [ms] (mean)
Time per request:       0.485 [ms] (mean, across all concurrent requests)
Transfer rate:          243.85 [Kbytes/sec] received

其中為libevent時(shí)。cpu占用率為50%,而使用Swoole時(shí)為70%。
當(dāng)你業(yè)務(wù)為CPU密集時(shí)可以優(yōu)先使用libevent，而為IO密集時(shí)可以考慮使用swoole。