ab工具测试 swoole 和 ngixn＋php-fpm 的并发对比

测试样例: 执行的一条sql记录的1w次插入
分两组: 一组用nginx+pfm 来执行, 一组用swoole 来执行

公平性保证前提:
@1.为了保证公平性, 在nginx里把 access_log, error_log都关掉.
    vim nginx.conf 的http模块
        access_log off;
        error_log off;
        rewrite_log off;

@2. ulimit -n 10240 把进程的可操作文件描述符数调大, 默认才1024(我这每次并发都1k了) 和nginx 里设置 worker_rlimit_nofile 30000;
@3. max_connections=2048   mysql的最大可连接数开到2048
@4. php-fpm 数量为5个, swoole的工作进程也只开5个.

nginx + fpm 组: 
测试代码如下:

<?php
$link = mysqli_connect("192.168.0.7","root","root", "testdb") or die(mysql_error());
$sql = "INSERT INTO test (`user_id`,`date`,`fee`) VALUE('100','2018-09-21',300)";
$result = mysqli_query($link, $sql) or die(mysqli_error($link));

?>

　

脚本执行的只是一条sql记录的插入:

ab -n 10000 -c 1000 http://proxy.com/press.php　　[http://proxy.com 就是ip 192.168.0.7的nginx虚拟主机]
-n 表示总共执行1w次请求, -c 表示每次并发数, 即每次并发1000条,总共1w条

然后开始执行nginx + php-fpm 组合版的压测
[root@07 server]# ab -n 10000 -c 1000 http://proxy.com/press.php

Server Software: nginx
Server Hostname: proxy.com
Server Port: 80

Document Path: /press.php
Document Length: 0 bytes

Concurrency Level: 1000
Time taken for tests: 111.796 seconds
Complete requests: 10000
Failed requests: 1368
(Connect: 0, Receive: 0, Length: 1368, Exceptions: 0)
Write errors: 0
Non-2xx responses: 1368
Total transferred: 1985628 bytes
HTML transferred: 231368 bytes
Requests per second: 89.45 [#/sec] (mean)
Time per request: 11179.624 [ms] (mean)
Time per request: 11.180 [ms] (mean, across all concurrent requests)
Transfer rate: 17.34 [Kbytes/sec] received

看上面的结果,1w个请求总花费了64s才执行完,但失败的请求就达到 7777 , 即成功的只有2223个.每秒的并发数只有155个
[nginx没有打印任何log, 数据库插入也确实只有2223条记录]

---

然后轮到swoole组了 
ab -n 10000 -c 1000 http://127.0.0.1:9501/
完整代码如下:

<?php
// Server
class Server
{
    private $serv;

    public function __construct() {
        $this->serv = new swoole_server("0.0.0.0", 9501);
        $this->serv->set(array(
            'worker_num' => 5,          　　//fpm只开了5个, swoole也只开5个子进程
            'daemonize' => false,
        ));

        $this->serv->on('Start', array($this, 'onStart'));
        $this->serv->on('Connect', array($this, 'onConnect'));
        $this->serv->on('Receive', array($this, 'onReceive'));
        $this->serv->on('Close', array($this, 'onClose'));

        $this->serv->start();
    }

    public function onStart( $serv ) {
        echo "Start\n";
    }

    public function onConnect( $serv, $fd, $from_id ) {
    }

    public function onReceive( swoole_server $serv, $fd, $from_id, $data ) {
        $link = mysqli_connect("192.168.0.7","root","root", "testdb");
        $sql = "INSERT INTO test (`user_id`,`date`,`fee`) VALUE('100','2018-09-21',300)";
        $result = mysqli_query($link, $sql) or die(mysqli_error($link));
        $serv->close($fd);
    }

    public function onClose( $serv, $fd, $from_id ) {

    }

}
// 启动服务器 Start the server
$server = new Server();

?>

　　 

然后就是执行压测:

[root@07 server]# ab -n 10000 -c 1000 http://127.0.0.1:9501/  

Server Software: Server 
Hostname: 127.0.0.1 
Server Port: 9501 
Document Path: / 
Document Length: 0 bytes 
Concurrency Level: 1000 
Time taken for tests: 18.626 seconds <---- 
Complete requests: 10000 
Failed requests:  
Write errors: 0 
Total transferred: 0 bytes 
HTML transferred: 0 bytes 
Requests per second: 536.88 [#/sec] (mean) <--- 
Time per request: 1862.614 [ms] (mean) 
Time per request: 1.863 [ms] (mean, across all concurrent requests) 
Transfer rate: 0.00 [Kbytes/sec] received 

来总结两者的对比就会发现swoole的强大得有点可怕 ...

field	nginx	swoole
总耗时	111s	18s
请求失败数	1368	0
每秒并发数	89	536