简单生活@NET » TFB http://lee.kometo.com 正确的判断来自经验，但经验往往来自错误的判断 Mon, 06 Feb 2012 02:26:17 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Zend Framework 框架典型初始化过程的效率测试与分析 http://lee.kometo.com/archives/106 http://lee.kometo.com/archives/106#comments Thu, 19 Jun 2008 08:06:56 +0000 Emeric lee http://lee.kometo.com/index.php/archives/106 测试目的

在一个典型的PHP服务器环境下运行一个典型的Zend Framework，并分段逐步分析性能消耗情况

测试环境：

Apache/2.0.55 (Win32) mod_fastcgi/2.4.2
PHP Version 5.2.5 （无Zend Optimizer等加速模块）
Windows 2003 NT 5.2 build 3790
Cpu： intel Xeon 3.0G
内存： 1G

主要测试伪代码


step 1: set_include_path()
step 2: require Zend_Loder
step 3: registerAutoload
step 4: load config & create db adapter
step 5: init zend layout
step 6: init zend auth
step 7: init Zend front controller & Dispath
?>

测试方法和主要测试指标

1、PHP Core Time（PCT）：服务器端使用 vsprintf(‘%d.%06d’, gettimeofday()) 进行微秒级的计时，并输出总的PHP代码运行时间。
2、客户端使用 Webserver Stress Tool 进行客户端的压力测试和访问记时，主要评估两个指标：
Average Time to First Byte （TFB）：首字节的接收时间
Average Click Time （CT）：模拟点击完成时间，既页面从点击请求开始到下载完成的时间
3、 Webserver Stress Tool测试模拟两种情况
低负载：单用户，间隔2秒点击一次页面
高负载：30个用户，每人间隔2秒点击一次页面，相当于每秒动态页面访问（DPV）5-10次

测试综合结果
PCT
 低负载
 高负载
TFB
 CT
 TFB
 CT
 执行代码（增量）
Step 1
 0.05
 89
 1054
 168
 246
 set_include_path()
Step 2
 1.9
 133
 847
 148
 211
 require Zend_Loder
Step 3
 2.7
 144
 1010
 229
 299
 registerAutoload
Step 4
 70
 166
 842
 249
 337
 load config & create db adapter
Step 5
 150
 229
 1053
 1544
 1692
 init zend layout
Step 6
 150
 254
 741
 2430
 2552
 init zend auth
Step 7
 300
 382
 1053
 5054
 5404
 init Zend front controller & Dispath
单位：ms

测试结果综合分析

1、ZF的典型环境初始化的基本消耗还是比较大的，测试代码的最终结果仅仅是使用的ZF标准MVC架构输出了一个Hello，我们可以看到，它的PCT到了300ms，在高负载测试中，更是使TFB达到了5000ms。我个人认为可以接受的框架初始消耗的PCT应该在150ms以下，所以对高负载WEB应用使用ZF必须非常慎重。
2、对比低负载测试和高负载测试我们可以发现，TFB会因为负载的提高而明显增加，而随着代码复杂程度的提高，差距越来越大，最高到了382：5054
3、对比低负载测试和高负载测试我们可以发现，在简单代码情况下，“低负载”的CT结果反而会高于“高负载”的结果，我推测这应该是由于Apache或者FastCGI的缓存机制造成；随着代码复杂程度的提高，高负载时服务器的的TFB明显提高，这一现象也被冲淡了。
4、TFB是衡量网页对客户端响应速度的重要指标，我们可以发现，低负载测试结果中的TFB基本都等于相应的PCT + 80ms，这多出来的80ms应该就是Aapche+php的页面环境初始化所消耗的是时间，而这一时间是发生在PHP以外的，所以PHP自身是无法计时和统计到这一时间的。

测试详细结果记录


步骤一：
CODE：


set_include_path(‘app’ . PATH_SEPARATOR
. ‘libs’ . PATH_SEPARATOR
. get_include_path());


PHP Core Time:
~0.055 ms
WT1：30U × 4C D2 （30用户，点击4次，间隔2秒）

2008-6-18 18:47:02: Measured Times:
2008-6-18 18:47:02: Average Time to Create Local Socket for 30 Users: 2 ms
2008-6-18 18:47:02: Average DNS Time for 30 Users: 71 ms
2008-6-18 18:47:02: Average Time to Connect for 30 Users: 101 ms
2008-6-18 18:47:02: Average Time to First Byte for 30 Users: 168 ms
2008-6-18 18:47:02: Average Click Time for 30 Users: 246 ms
2008-6-18 18:47:02:
2008-6-18 18:47:02: Hits per Second: 13.09 (equals 47,127.99 Hits per Hour)
2008-6-18 18:47:02: Successful clicks per Second: 13.09 (equals 47,127.99 Clicks per Hour)
2008-6-18 18:47:02:
2008-6-18 18:47:02: Results per URL for this Period:
2008-6-18 18:47:02: URL#1 (Test): Average Click Time 246 ms, 134 Clicks, 0 Errors,
2008-6-18 18:47:02: Average Click Time of all URLs: 246 ms


WT2：1U × 10C D2

2008-6-18 18:50:15: Measured Times:
2008-6-18 18:50:15: Average Time to Create Local Socket for 1 Users: 1 ms
2008-6-18 18:50:15: Average DNS Time for 1 Users: 48 ms
2008-6-18 18:50:15: Average Time to Connect for 1 Users: 49 ms
2008-6-18 18:50:15: Average Time to First Byte for 1 Users: 89 ms
2008-6-18 18:50:15: Average Click Time for 1 Users: 1,054 ms
2008-6-18 18:50:15:
2008-6-18 18:50:15: Hits per Second: 0.30 (equals 1,064.36 Hits per Hour)
2008-6-18 18:50:15: Successful clicks per Second: 0.30 (equals 1,064.36 Clicks per Hour)
2008-6-18 18:50:15:
2008-6-18 18:50:15: Results per URL for this Period:
2008-6-18 18:50:15: URL#1 (Test): Average Click Time 1,054 ms, 3 Clicks, 0 Errors,
2008-6-18 18:50:15: Average Click Time of all URLs: 1,054 ms



步骤二：
CODE：


+ require_once “Zend/Loader.php”;

PHP Core Time:

~1.9ms

WT1：30U × 4C D2 （30用户，点击4次，间隔2秒）

2008-6-18 19:11:40: Average Time to Create Local Socket for 30 Users: 1 ms
2008-6-18 19:11:40: Average DNS Time for 30 Users: 68 ms
2008-6-18 19:11:40: Average Time to Connect for 30 Users: 75 ms
2008-6-18 19:11:40: Average Time to First Byte for 30 Users: 148 ms
2008-6-18 19:11:40: Average Click Time for 30 Users: 211 ms
2008-6-18 19:11:40:
2008-6-18 19:11:40: Hits per Second: 13.02 (equals 46,863.23 Hits per Hour)
2008-6-18 19:11:40: Successful clicks per Second: 13.02 (equals 46,863.23 Clicks per Hour)
2008-6-18 19:11:40:
2008-6-18 19:11:40: Results per URL for this Period:
2008-6-18 19:11:40: URL#1 (Test): Average Click Time 211 ms, 133 Clicks, 0 Errors,

WT2：1U × 10C D2

2008-6-19 9:39:48: Average Time to Create Local Socket for 1 Users: 1 ms
2008-6-19 9:39:48: Average DNS Time for 1 Users: 50 ms
2008-6-19 9:39:48: Average Time to Connect for 1 Users: 52 ms
2008-6-19 9:39:48: Average Time to First Byte for 1 Users: 133 ms
2008-6-19 9:39:48: Average Click Time for 1 Users: 847 ms
2008-6-19 9:39:48:
2008-6-19 9:39:48: Hits per Second: 0.29 (equals 1,054.84 Hits per Hour)
2008-6-19 9:39:48: Successful clicks per Second: 0.29 (equals 1,054.84 Clicks per Hour)
2008-6-19 9:39:48:
2008-6-19 9:39:48: Results per URL for this Period:
2008-6-19 9:39:48: URL#1 (Test): Average Click Time 847 ms, 3 Clicks, 0 Errors,





步骤三：
CODE：


+ Zend_Loader::registerAutoload();


PHP Core Time:
~2.7ms
WT1：30U × 4C D2 （30用户，点击4次，间隔2秒）

2008-6-19 9:50:03: Average Time to Create Local Socket for 30 Users: 1 ms
2008-6-19 9:50:03: Average DNS Time for 30 Users: 85 ms
2008-6-19 9:50:03: Average Time to Connect for 30 Users: 90 ms
2008-6-19 9:50:03: Average Time to First Byte for 30 Users: 229 ms
2008-6-19 9:50:03: Average Click Time for 30 Users: 299 ms
2008-6-19 9:50:03:
2008-6-19 9:50:03: Hits per Second: 12.71 (equals 45,772.06 Hits per Hour)
2008-6-19 9:50:03: Successful clicks per Second: 12.71 (equals 45,772.06 Clicks per Hour)
2008-6-19 9:50:03:
2008-6-19 9:50:03: Results per URL for this Period:
2008-6-19 9:50:03: URL#1 (Test): Average Click Time 299 ms, 129 Clicks, 0 Errors,

WT2：1U × 10C D2

2008-6-19 9:51:56: Average Time to Create Local Socket for 1 Users: 1 ms
2008-6-19 9:51:56: Average DNS Time for 1 Users: 53 ms
2008-6-19 9:51:56: Average Time to Connect for 1 Users: 55 ms
2008-6-19 9:51:56: Average Time to First Byte for 1 Users: 144 ms
2008-6-19 9:51:56: Average Click Time for 1 Users: 1,010 ms
2008-6-19 9:51:56:
2008-6-19 9:51:56: Hits per Second: 0.30 (equals 1,062.37 Hits per Hour)
2008-6-19 9:51:56: Successful clicks per Second: 0.30 (equals 1,062.37 Clicks per Hour)
2008-6-19 9:51:56:
2008-6-19 9:51:56: Results per URL for this Period:
2008-6-19 9:51:56: URL#1 (Test): Average Click Time 1,010 ms, 3 Clicks, 0 Errors,



步骤四：
CODE：


+ init Zend DB

PHP Core Time:
~70ms
WT1：30U × 4C D2

2008-6-19 10:33:46: Average Time to Create Local Socket for 30 Users: 2 ms
2008-6-19 10:33:46: Average DNS Time for 30 Users: 82 ms
2008-6-19 10:33:46: Average Time to Connect for 30 Users: 84 ms
2008-6-19 10:33:46: Average Time to First Byte for 30 Users: 249 ms
2008-6-19 10:33:46: Average Click Time for 30 Users: 337 ms
2008-6-19 10:33:46:
2008-6-19 10:33:46: Hits per Second: 12.39 (equals 44,614.31 Hits per Hour)
2008-6-19 10:33:46: Successful clicks per Second: 12.39 (equals 44,614.31 Clicks per Hour)
2008-6-19 10:33:46:
2008-6-19 10:33:46: Results per URL for this Period:
2008-6-19 10:33:46: URL#1 (Test): Average Click Time 337 ms, 124 Clicks, 0 Errors,

WT2：1U × 10C D2
 2008-6-19 10:35:26: Average Time to Create Local Socket for 1 Users: 1 ms

2008-6-19 10:35:26: Average DNS Time for 1 Users: 46 ms
2008-6-19 10:35:26: Average Time to Connect for 1 Users: 48 ms
2008-6-19 10:35:26: Average Time to First Byte for 1 Users: 166 ms
2008-6-19 10:35:26: Average Click Time for 1 Users: 842 ms
2008-6-19 10:35:26:
2008-6-19 10:35:26: Hits per Second: 0.40 (equals 1,421.12 Hits per Hour)
2008-6-19 10:35:26: Successful clicks per Second: 0.40 (equals 1,421.12 Clicks per Hour)
2008-6-19 10:35:26:
2008-6-19 10:35:26: Results per URL for this Period:
2008-6-19 10:35:26: URL#1 (Test): Average Click Time 842 ms, 4 Clicks, 0 Errors,


步骤五：
CODE：


+ init Zend Layout


PHP Core Time:
~150ms
WT1：30U × 4C D2

2008-6-19 10:41:18: Average Time to Create Local Socket for 30 Users: 1 ms
2008-6-19 10:41:18: Average DNS Time for 30 Users: 90 ms
2008-6-19 10:41:18: Average Time to Connect for 30 Users: 93 ms
2008-6-19 10:41:18: Average Time to First Byte for 30 Users: 1,544 ms
2008-6-19 10:41:18: Average Click Time for 30 Users: 1,692 ms
2008-6-19 10:41:18:
2008-6-19 10:41:18: Hits per Second: 7.76 (equals 27,927.16 Hits per Hour)
2008-6-19 10:41:18: Successful clicks per Second: 7.76 (equals 27,927.16 Clicks per Hour)
2008-6-19 10:41:18:
2008-6-19 10:41:18: Results per URL for this Period:
2008-6-19 10:41:18: URL#1 (Test): Average Click Time 1,692 ms, 80 Clicks, 0 Errors,

WT2：1U × 10C D2
 2008-6-19 10:42:48: Average Time to Create Local Socket for 1 Users: 1 ms

2008-6-19 10:42:48: Average DNS Time for 1 Users: 46 ms
2008-6-19 10:42:48: Average Time to Connect for 1 Users: 47 ms
2008-6-19 10:42:48: Average Time to First Byte for 1 Users: 229 ms
2008-6-19 10:42:48: Average Click Time for 1 Users: 1,053 ms
2008-6-19 10:42:48:
2008-6-19 10:42:48: Hits per Second: 0.40 (equals 1,424.74 Hits per Hour)
2008-6-19 10:42:48: Successful clicks per Second: 0.40 (equals 1,424.74 Clicks per Hour)
2008-6-19 10:42:48:
2008-6-19 10:42:48: Results per URL for this Period:
2008-6-19 10:42:48: URL#1 (Test): Average Click Time 1,053 ms, 4 Clicks, 0 Errors,

步骤六：
CODE：


+ init Zend View
+ init Zend User


PHP Core Time:
~150ms
WT1：30U × 4C D2

2008-6-19 11:27:59: Average Time to Create Local Socket for 30 Users: 1 ms
2008-6-19 11:27:59: Average DNS Time for 30 Users: 77 ms
2008-6-19 11:27:59: Average Time to Connect for 30 Users: 85 ms
2008-6-19 11:27:59: Average Time to First Byte for 30 Users: 2,430 ms
2008-6-19 11:27:59: Average Click Time for 30 Users: 2,552 ms
2008-6-19 11:27:59:
2008-6-19 11:27:59: Hits per Second: 6.33 (equals 22,786.27 Hits per Hour)
2008-6-19 11:27:59: Successful clicks per Second: 6.33 (equals 22,786.27 Clicks per Hour)
2008-6-19 11:27:59:
2008-6-19 11:27:59: Results per URL for this Period:
2008-6-19 11:27:59: URL#1 (Test): Average Click Time 2,552 ms, 65 Clicks, 0 Errors,

WT2：1U × 10C D2

2008-6-19 11:24:37: Average Time to Create Local Socket for 1 Users: 1 ms
2008-6-19 11:24:37: Average DNS Time for 1 Users: 46 ms
2008-6-19 11:24:37: Average Time to Connect for 1 Users: 47 ms
2008-6-19 11:24:37: Average Time to First Byte for 1 Users: 254 ms
2008-6-19 11:24:37: Average Click Time for 1 Users: 741 ms
2008-6-19 11:24:37:
2008-6-19 11:24:37: Hits per Second: 0.39 (equals 1,411.08 Hits per Hour)
2008-6-19 11:24:37: Successful clicks per Second: 0.39 (equals 1,411.08 Clicks per Hour)
2008-6-19 11:24:37:
2008-6-19 11:24:37: Results per URL for this Period:
2008-6-19 11:24:37: URL#1 (Test): Average Click Time 741 ms, 4 Clicks, 0 Errors,


步骤七（完成）：
CODE：


+ init Zend_Controller_Front
+ dispatch & run

PHP Core Time:
~300ms
WT1：30U × 4C D2

2008-6-19 11:33:51: Average Time to Create Local Socket for 30 Users: 2 ms
2008-6-19 11:33:51: Average DNS Time for 30 Users: 101 ms
2008-6-19 11:33:51: Average Time to Connect for 30 Users: 114 ms
2008-6-19 11:33:51: Average Time to First Byte for 30 Users: 5,054 ms
2008-6-19 11:33:51: Average Click Time for 30 Users: 5,404 ms
2008-6-19 11:33:51:
2008-6-19 11:33:51: Hits per Second: 4.14 (equals 14,890.34 Hits per Hour)
2008-6-19 11:33:51: Successful clicks per Second: 4.14 (equals 14,890.34 Clicks per Hour)
2008-6-19 11:33:51:
2008-6-19 11:33:51: Results per URL for this Period:
2008-6-19 11:33:51: URL#1 (Test): Average Click Time 5,404 ms, 43 Clicks, 0 Errors,

WT2：1U × 10C D2

2008-6-19 11:35:03: Average Time to Create Local Socket for 1 Users: 1 ms
2008-6-19 11:35:03: Average DNS Time for 1 Users: 47 ms
2008-6-19 11:35:03: Average Time to Connect for 1 Users: 48 ms
2008-6-19 11:35:03: Average Time to First Byte for 1 Users: 382 ms
2008-6-19 11:35:03: Average Click Time for 1 Users: 1,053 ms
2008-6-19 11:35:03:
2008-6-19 11:35:03: Hits per Second: 0.40 (equals 1,424.61 Hits per Hour)
2008-6-19 11:35:03: Successful clicks per Second: 0.40 (equals 1,424.61 Clicks per Hour)
2008-6-19 11:35:03:
2008-6-19 11:35:03: Results per URL for this Period:
2008-6-19 11:35:03: URL#1 (Test): Average Click Time 1,053 ms, 4 Clicks, 0 Errors,
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