Swoole2.0內置協程併發測試

時間  2019-12-06
標籤 swoole2.0 swoole 內置 併發 測試 简体版
原文   原文鏈接

Swoole2.0是一個革命性的版本，它內置了協程的支持。與Go語言協程不一樣，Swoole協程徹底不須要開發者添加任何額外的關鍵詞，直接以過去最傳統的同步阻塞模式編寫代碼，底層自動進行協程調度實現異步IO。使併發編程變得很是簡單。php

最新的版本中，內置協程已支持PHP7，同時兼具了性能和併發能力，Swoole的強大超乎想象。mysql

本文基於Github最新的Swoole2.0.3版本進行了併發壓力測試，來驗證Swoole內置協程的併發能力。nginx

測試環境

  • 操做系統：Ubuntu 16.04
  • 軟件版本：PHP-7.0.14 Swoole-2.0.3
  • 硬件環境：酷睿I5+8G內存

測試代碼

$server = new Swoole\Http\Server('127.0.0.1', 9501, SWOOLE_BASE);

$server->set(array('worker_num' => 1));

$server->on('Request', function($request, $response) {

	$mysql = new Swoole\Coroutine\MySQL();
	$res = $mysql->connect(['host' => '127.0.0.1', 'user' => 'root', 'password' => 'root', 'database' => 'test']);
	if ($res == false) {
		$response->end("MySQL connect fail!");
		return;
	}
	$ret = $mysql->query('select sleep(1)');
    $response->end("swoole response is ok, result=".var_export($ret, true));
});

$server->start();

代碼很是簡單，使用BASE模式建立一個Http服務器，而且設置進程爲1，收到Http請求後執行一條select sleep(1) 語句，這條SQL模擬了阻塞IO，MySQL的服務器在1秒後返回結果。傳統的同步阻塞程序，啓動1個進程，毫無疑問只能提供1QPS的處理能力。而Swoole2.0協程不一樣，它雖然使用同步阻塞方式編寫代碼，可是底層確是異步IO，即便SQL語言執行時間很長，也能夠提供很大的併發能力。sql

啓動程序

php server.php
ps aux|grep server.php
htf      13142  0.6  0.2 328480 42268 pts/24   S+   10:17   0:00 php server.php

併發100測試

ab -c 100 -n 1000 http://127.0.0.1:9501/
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software:        swoole-http-server
Server Hostname:        127.0.0.1
Server Port:            9501

Document Path:          /
Document Length:        85 bytes

Concurrency Level:      100
Time taken for tests:   10.061 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      233000 bytes
HTML transferred:       85000 bytes
Requests per second:    99.39 [#/sec] (mean)
Time per request:       1006.092 [ms] (mean)
Time per request:       10.061 [ms] (mean, across all concurrent requests)
Transfer rate:          22.62 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.3      0       7
Processing:  1000 1004   4.7   1002    1020
Waiting:     1000 1004   4.7   1002    1020
Total:       1000 1005   5.8   1003    1026

Percentage of the requests served within a certain time (ms)
  50%   1003
  66%   1004
  75%   1005
  80%   1006
  90%   1016
  95%   1020
  98%   1022
  99%   1022
 100%   1026 (longest request)

併發1000測試

ab -c 1000 -n 2000 http://127.0.0.1:9501/
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 200 requests
Completed 400 requests
Completed 600 requests
Completed 800 requests
Completed 1000 requests
Completed 1200 requests
Completed 1400 requests
Completed 1600 requests
Completed 1800 requests
Completed 2000 requests
Finished 2000 requests


Server Software:        swoole-http-server
Server Hostname:        127.0.0.1
Server Port:            9501

Document Path:          /
Document Length:        19 bytes

Concurrency Level:      1000
Time taken for tests:   2.025 seconds
Complete requests:      2000
Failed requests:        153
   (Connect: 0, Receive: 0, Length: 153, Exceptions: 0)
Total transferred:      344098 bytes
HTML transferred:       48098 bytes
Requests per second:    987.66 [#/sec] (mean)
Time per request:       1012.493 [ms] (mean)
Time per request:       1.012 [ms] (mean, across all concurrent requests)
Transfer rate:          165.94 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    6   6.6      8      18
Processing:     8  166 336.4     68    2006
Waiting:        8  166 336.4     68    2006
Total:          8  173 340.6     83    2022

Percentage of the requests served within a certain time (ms)
  50%     83
  66%     87
  75%     89
  80%     90
  90%   1021
  95%   1087
  98%   1092
  99%   1093
 100%   2022 (longest request)

Length: 153 錯誤是由於MySQL服務器已經沒法支持這麼大併發了，拒絕了swoole的鏈接，所以會拋出錯誤。shell

php-fpm測試

爲了進行對比，本文還作了php-fpm的測試。一樣使用PHP7，修改php-fpm.conf將php-fpm進程設置爲1。測試的代碼與Swoole的徹底一致，也是執行同一個sleep的SQL語句。 由於php-fpm是真正的同步阻塞，耗時太長，所以只能使用併發10請求100的方式測試。apache

測試代碼：編程

$db = new mysqli;
$db->connect('127.0.0.1', 'root', 'root', 'test');
$result = $db->query("select sleep(1)");

if ($result) 
{
    print_r($result->fetch_all());
}
else die(sprintf("MySQLi Error: %s", mysqli_error($link)));
ab -c 10 -n 100 http://127.0.0.1/mysql.php
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient).....done


Server Software:        nginx/1.10.0
Server Hostname:        127.0.0.1
Server Port:            80

Document Path:          /mysql.php
Document Length:        69 bytes

Concurrency Level:      10
Time taken for tests:   100.086 seconds
Complete requests:      100
Failed requests:        0
Total transferred:      24100 bytes
HTML transferred:       6900 bytes
Requests per second:    1.00 [#/sec] (mean)
Time per request:       10008.594 [ms] (mean)
Time per request:       1000.859 [ms] (mean, across all concurrent requests)
Transfer rate:          0.24 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.1      0       0
Processing:  1002 9558 1636.0  10008   10011
Waiting:     1002 9558 1636.0  10008   10011
Total:       1002 9558 1636.0  10008   10011

Percentage of the requests served within a certain time (ms)
  50%  10008
  66%  10009
  75%  10009
  80%  10009
  90%  10009
  95%  10010
  98%  10010
  99%  10011
 100%  10011 (longest request)

結果評價

能夠看到Swoole服務器，即便SQL語句要執行1秒才返回結果，併發100的測試中也提供了100qps的能力，併發1000的測試中QPS爲987，但MySQL服務器已經沒法提供服務了。而同步阻塞的php-fpm處理併發10請求100的測試花費了100秒才完成，QPS爲1。服務器

Swoole2.0的內置協程將來可能會顛覆現代軟件的開發模式。swoole

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