LoadRunner去除事物中的程序的执行时间

大家在性能测试过程中，经常会用到程序处理或组织数据，以达到一定的测试目的，但是程序本身执行会消耗一些时间，这部分消耗的时间是包含在响应时间里面，此时，响应时间=正常响应时间+程序执行消耗时间。那么如何来保证响应最接近真实，LoadRunner提供了一组函数，减去程序消耗时间，达到测试目的。函数（绿色标注）如下：

 double time_elapsed = 0.00, duration = 0.00, waste = 0.00,trans_time = 0.00,waste_time = 0.00; 

 merc_timer_handle_t timer; 

         timer = lr_start_timer(); //timer开始

         if(strlen(lr_eval_string("{P_Bal}")) > )

         {

           for(i=;i < strlen(lr_eval_string("{P_Bal}"));i++)

                   {

                            //lr_error_message("%d",i);

                            lr_save_var(lr_eval_string("{P_Bal}")+i,,,"P_Value");

                            #define temp = 0;

                            //lr_error_message("%s",lr_eval_string("{P_Value}"));

                            if(atoi(lr_eval_string("{P_Value}")) != )

                           {

                                     if(strcmp(lr_eval_string("{P_Value}"),",") !=  && strcmp(lr_eval_string("{P_Value}"),".") != )

                                     {

                                               break;

                                     }

                            }

                   }

         }

         time_elapsed = lr_end_timer(timer);//停止timer

         lr_output_message("%lf",time_elapsed);

waste = time_elapsed * ; //毫秒转成秒

         if(lr_get_transaction_status("XXX") ==  || atoi(lr_eval_string("{P_Value}")) <= )

         {

lr_wasted_time(waste);//响应时间减去纯语句消耗的时间

         lr_end_transaction("XXX", LR_FAIL);

                    lr_output_message("XXX失败 %s %s",lr_eval_string("{UserName}"),lr_eval_string("{P_AccountId}"));

         goto exit;

         }

以下代码：

    由于web_find函数进行的操作无须包括在事务总执行时间中，因些要用计时器来计算其执行时间，然后用lr_wasted_time函数将其从事务的总执行时间中扣除。

Action()

{

    double time_elapsed;

    merc_timer_handle_t timer;

    lr_start_transaction("Search");

    web_url("baidu_search",

            "url=http://www.baidu.com/s?wd=LoadRunner",

            "mode=html",

            LAST);

    timer=lr_start_timer();//创建计时器，返回值是计时器标志

    web_find("web_find","what=load",LAST);

    time_elapsed=lr_end_timer(timer);//计时结束，计时结果time_elapsed返回值单位是秒

    lr_wasted_time(time_elapsed*);//lr_wasted_time函数定义的参数是毫秒，所以要*1000

    lr_error_message("Find Time= %lf,wasted_time=%lf",time_elapsed,lr_get_transaction_wasted_time("Search"));

    lr_end_transaction("Search",LR_AUTO);

    return ;

}

以上代码，lr_get_transaction_wasted_time使用注意点：

、要在lr_end_transaction之前使用，因为它只能对当前处于“运行状态”的事务返回>0的结果。

、调用lr_get_transaction_wasted_time之前，要使用lr_wasted_time移除损耗时间。

关于时间的几个函数：

lr_get_transaction_duration得到transaction运行到当前位置的duration，包含事务的响应时间和wasted time，单位是s;

着重理解下wasted time:

 wasted time包括事务中函数自身执行所消耗的时间，这个时间是loadrunner自动会计的，计在lr_get_transaction_wasted_time里面，还有比如C语言等外部接口进行处理的时间这个loadrunner不会自动计，但是我们可以通过lr_start_timer（单位是s）、lr_end_timer（单位是s）、lr_wasted_time（这个函数的形参中wasted time的单位是毫秒，所以通过timer计的时间需要乘上1000）等函数手动计入lr_get_transaction_wasted_time里面

 下面来验证下：

Action()

 {

     int i, baseIter = ;

     char dude[];

     double wasteTime;

     merc_timer_handle_t timer; 

     lr_start_transaction("baidu");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=www.baidu.com");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=passport.baidu.com");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=suggestion.baidu.com");

 web_url("www.baidu.com",

 "URL=http://www.baidu.com/",

 "Resource=0",

 "RecContentType=text/html",

 "Referer=",

 "Snapshot=t1.inf",

 "Mode=HTML",

 EXTRARES,

 "Url=http://s1.bdstatic.com/r/www/cache/static/global/img/icons_37d13939.png", ENDITEM,

 "Url=http://s1.bdstatic.com/r/www/cache/static/sug/js/bdsug_31b8d653.js", ENDITEM,

 "Url=/favicon.ico", "Referer=", ENDITEM,

 "Url=http://passport.baidu.com/passApi/js/uni_login_wrapper.js?cdnversion=1400118095796&_=1400118095656", ENDITEM,

 "Url=http://suggestion.baidu.com/su?

 wd=&zxmode=&json=&p=&sid=4948_6429_1450_5223_6505_4760_6017_6462_6428_6456_6454&cb=jQuery110208749060739643981_1400118095657&_=", ENDITEM, LAST);

 //在脚本中间位置，记录此时事务自身函数消耗的时间，这个是loadrunner自动计的

    lr_output_message("User created waste time to this point calculated by loadrunner = %lf", lr_get_transaction_wasted_time("baidu")); 

 //使用一个测试语句手动记录消耗的时间

    timer = lr_start_timer(); 

     for (i=; i< ( * baseIter); ++i)

             sprintf(dude, "This is the way we waste time in a script = %d", i); 

     wasteTime = lr_end_timer(timer);

     lr_output_message("User created waste time calculated by timer = %lf", wasteTime); 

     wasteTime *= ; 

 //通过lr_wasted_time函数将wasteTime标记为wasted time

     lr_wasted_time(wasteTime); 

 //通过lr_get_transaction_wasted_time函数会汇总手工记录的消耗时间和loadrunner自动记录的消耗时间

    lr_output_message("Total User created waste time = %lf", lr_get_transaction_wasted_time("baidu")); 

     lr_output_message("Transaction duration = %lf", lr_get_transaction_duration("baidu")); 

     lr_end_transaction("baidu", LR_AUTO);

     return ;

 }

运行日志如下：

Virtual User Script started at : -- ::

 Starting action vuser_init.

 Web Turbo Replay of LoadRunner 11.0. for WINXP; build  (Aug   ::)   [MsgId: MMSG-]

 Run Mode: HTML   [MsgId: MMSG-]

 Run-Time Settings file: "F:\LR\baidu_open\\default.cfg"   [MsgId: MMSG-]

 Ending action vuser_init.

 Running Vuser...

 Starting iteration .

 Starting action Action.

 Action.c(): Notify: Transaction "baidu" started.

 Action.c(): web_add_cookie was successful   [MsgId: MMSG-]

 Action.c(): web_add_cookie was successful   [MsgId: MMSG-]

 Action.c(): web_add_cookie was successful   [MsgId: MMSG-]

 Action.c(): Downloading resource "http://s1.bdstatic.com/r/www/cache/static/global/img/icons_37d13939.png" (specified by argument number )   [MsgId: MMSG-]

 Action.c(): Downloading resource "http://s1.bdstatic.com/r/www/cache/static/sug/js/bdsug_31b8d653.js" (specified by argument number )

 [MsgId: MMSG-]

 Action.c(): Downloading resource "http://www.baidu.com/favicon.ico" (specified by argument number )   [MsgId: MMSG-]

 Action.c(): Downloading resource "http://passport.baidu.com/passApi/js/uni_login_wrapper.js?cdnversion=1400118095796&_=1400118095656" (specified by argument number )   [MsgId: MMSG-]

 Action.c(): Downloading resource "http://suggestion.baidu.com/su?wd=&zxmode=1&json=1&p=3&sid=4948_6429_1450_5223_6505_4760_6017_6462_6428_6456_6454&cb=jQuery110208749060739643981_1400118095657&_=1400118095658" (specified by argument number )   [MsgId: MMSG-]

 Action.c(): Found resource "http://www.baidu.com/img/baidu_jgylogo3.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): Found resource "http://www.baidu.com/img/bdlogo.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): Found resource "http://www.baidu.com/cache/global/img/gs-2.0.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): Found resource "http://s1.bdstatic.com/r/www/cache/static/jquery/jquery-1.10.2.min_f2fb5194.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): Found resource "http://s1.bdstatic.com/r/www/cache/static/global/js/all_async_f712ea4c.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): Found resource "http://s1.bdstatic.com/r/www/cache/static/global/js/imsg_45172630.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-]

 Action.c(): web_url("www.baidu.com") was successful,  body bytes,  header bytes,  chunking overhead bytes   [MsgId: MMSG-]

 Action.c(): User created waste time to this point calculated by loadrunner = 0.758138

 Action.c(): User created waste time calculated by timer = 7.646098

 Action.c(): Total User created waste time = 8.404138

 Action.c(): Transaction duration = 8.745259

 Action.c(): Notify: Transaction "baidu" ended with "Pass" status (Duration: 8.7524 Wasted Time: 8.4041).

 Ending action Action.

 Ending iteration .

 Ending Vuser...

 Starting action vuser_end.

 Ending action vuser_end.

 Vuser Terminated.

运行的结果也证明了我之前的理解

 注：在最开始的时候，使用oracle两层协议录制脚本，一直不能演示出自身函数消耗的时间，lr_get_transaction_wasted_time的值都为0，后来使用http协议可以演示出来

Action()

{

int i=;

int j=;

int l;

double time_elapsed, duration, waste;

merc_timer_handle_t timer;

for (l=;l<=;l++) {

lr_start_transaction("测试");

timer = lr_start_timer();

//lr_think_time(4);

time_elapsed = lr_end_timer(timer); 

// Convert to millisecond.s

waste = time_elapsed * ; 

if(waste>)

{

lr_end_transaction("测试", LR_FAIL);

lr_output_message("时间= %f",waste);        

i=i+;

}

else

{

lr_end_transaction("测试", LR_PASS);

lr_output_message("时间= %f",waste);

j=j+;

};

};

lr_output_message("成功次数为= %d",j);

lr_output_message("失败次数为= %d",i);

        return ;

}

lr_get_transaction_wasted_time函数
http://luochunfeng163.blog.163.com/blog/static/16700924920128205233959/

 lr_get_transaction_wasted_time函数用于返回指定事物当前的损耗时间(wasted time)。

  损耗时间通常是指脚本消耗在为了支持测试分析而做的操作时间。这些操作不会被实际用户所执行。

  例如一些循环赋值操作或插入检查点操作。消耗的时间有lr_wasted_time函数在

  lr_get_transaction_wasted_time函数之前移除了，移除后才得到对应的结果。

  函数语法结果

  double lr_get_transaction_wasted_time （const char * transaction);

  参数 transaction 为事物名称

  使用lr_get_transaction_wansted_time 函数必须注意，一它只能对当前运行状态的事物才能返回大于等于0的结果，否则返回小于0的结果。二是他使用之前应调用lr_wansted_time 函数移除过损耗时间 wasted time，否则lr_get_transaction_wansted_time将返回0。

Action()

{

    int i, baseIter = 1000; 

    char dude[1000]; 

    double wasteTime, actualElapsedTime; 

    merc_timer_handle_t MasterT, timer; 

    // Examine the total elapsed time of the action 

    MasterT = lr_start_timer(); 

    //Start transaction 

    lr_start_transaction("Demo"); 

    // Create some elapsed time for the transaction 

    for (i=0; i< (10 * baseIter); ++i)

        sprintf(dude, "This is the way we create elapsed time artificially = %d", i); 

    // Add some think time 

    lr_think_time(0.5); 

    // Create some wasted time and record it with timer 

    timer = lr_start_timer(); 

    for (i=0; i< (5 * baseIter); ++i) 

  sprintf(dude, "This is the way we waste time in a script = %d", i); 

    wasteTime = lr_end_timer(timer); 

    lr_output_message("User created waste time = %lf", wasteTime); 

    lr_output_message("Before lr_waste_time: Duration = %lf - Waste = %lf",         

        lr_get_transaction_duration("Demo"), 

        lr_get_transaction_wasted_time("Demo")); 

    /* Convert Timer in seconds to wasted time in milliseconds 

     and add to internally generated waste time */ 

    wasteTime *= 1000; 

    lr_wasted_time(wasteTime); 

    lr_output_message("After lr_waste_time: Duration = %lf - Waste = %lf", 

            lr_get_transaction_duration("Demo"), 

            lr_get_transaction_wasted_time("Demo")); 

    lr_output_message("Think time = %lf", lr_get_transaction_think_time("Demo")); 

    lr_end_transaction("Demo", LR_AUTO); 

    actualElapsedTime = lr_end_timer(MasterT); 

    lr_output_message("Total Elapsed time for Action = %lf", actualElapsedTime);

 return 0;

}

结果：

Starting iteration 1.

Starting action Action.

Action.c(17): Notify: Transaction "Demo" started.

Action.c(45): User created waste time = 15.768059

Action.c(47): Before lr_waste_time: Duration = 65.147478 - Waste = 0.000000

Action.c(61): After lr_waste_time: Duration = 65.153110 - Waste = 15.768000

Action.c(67): Think time = 0.000000

Action.c(71): Notify: Transaction "Demo" ended with "Pass" status (Duration: 65.1589 Wasted Time: 15.7680).

Action.c(75): Total Elapsed time for Action = 65.170579

Ending action Action.

Ending iteration 1.

初识loadrunner wasted time

关于时间的几个函数：

lr_get_transaction_duration得到transaction运行到当前位置的duration，包含事务的响应时间和wasted time，单位是s;

着重理解下wasted time:

 wasted time包括事务中函数自身执行所消耗的时间，这个时间是loadrunner自动会计的，计在lr_get_transaction_wasted_time里面，还有比如C语言等外部接口进行处理的时间这个loadrunner不会自动计，但是我们可以通过lr_start_timer（单位是s）、lr_end_timer（单位是s）、lr_wasted_time（这个函数的形参中wasted time的单位是毫秒，所以通过timer计的时间需要乘上1000）等函数手动计入lr_get_transaction_wasted_time里面

 下面来验证下：

Action()

 {

     int i, baseIter = 200;

     char dude[200];

     double wasteTime;

     merc_timer_handle_t timer; 

     lr_start_transaction("baidu");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=www.baidu.com");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=passport.baidu.com");

     web_add_cookie("BAIDUID=63CCB143FE1734437DBED1D457D18E3E:FG=1; DOMAIN=suggestion.baidu.com");

 web_url("www.baidu.com",

 "URL=http://www.baidu.com/",

 "Resource=0",

 "RecContentType=text/html",

 "Referer=",

 "Snapshot=t1.inf",

 "Mode=HTML",

 EXTRARES,

 "Url=http://s1.bdstatic.com/r/www/cache/static/global/img/icons_37d13939.png", ENDITEM,

 "Url=http://s1.bdstatic.com/r/www/cache/static/sug/js/bdsug_31b8d653.js", ENDITEM,

 "Url=/favicon.ico", "Referer=", ENDITEM,

 "Url=http://passport.baidu.com/passApi/js/uni_login_wrapper.js?cdnversion=1400118095796&_=1400118095656", ENDITEM,

 "Url=http://suggestion.baidu.com/su?

 wd=&zxmode=1&json=1&p=3&sid=4948_6429_1450_5223_6505_4760_6017_6462_6428_6456_6454&cb=jQuery110208749060739643981_1400118095657&_=1400118095658", ENDITEM, LAST);

 //在脚本中间位置，记录此时事务自身函数消耗的时间，这个是loadrunner自动计的

    lr_output_message("User created waste time to this point calculated by loadrunner = %lf", lr_get_transaction_wasted_time("baidu")); 

 //使用一个测试语句手动记录消耗的时间

    timer = lr_start_timer(); 

     for (i=0; i< (5 * baseIter); ++i)

             sprintf(dude, "This is the way we waste time in a script = %d", i); 

     wasteTime = lr_end_timer(timer);

     lr_output_message("User created waste time calculated by timer = %lf", wasteTime); 

     wasteTime *= 1000; 

 //通过lr_wasted_time函数将wasteTime标记为wasted time

     lr_wasted_time(wasteTime); 

 //通过lr_get_transaction_wasted_time函数会汇总手工记录的消耗时间和loadrunner自动记录的消耗时间

    lr_output_message("Total User created waste time = %lf", lr_get_transaction_wasted_time("baidu")); 

     lr_output_message("Transaction duration = %lf", lr_get_transaction_duration("baidu")); 

     lr_end_transaction("baidu", LR_AUTO);

     return 0;

 }

运行日志如下：

Virtual User Script started at : 2014-05-15 09:58:45

 Starting action vuser_init.

 Web Turbo Replay of LoadRunner 11.0.0 for WINXP; build 8859 (Aug 18 2010 20:14:31)   [MsgId: MMSG-27143]

 Run Mode: HTML   [MsgId: MMSG-26000]

 Run-Time Settings file: "F:\LR\baidu_open\\default.cfg"   [MsgId: MMSG-27141]

 Ending action vuser_init.

 Running Vuser...

 Starting iteration 1.

 Starting action Action.

 Action.c(12): Notify: Transaction "baidu" started.

 Action.c(14): web_add_cookie was successful   [MsgId: MMSG-26392]

 Action.c(16): web_add_cookie was successful   [MsgId: MMSG-26392]

 Action.c(18): web_add_cookie was successful   [MsgId: MMSG-26392]

 Action.c(20): Downloading resource "http://s1.bdstatic.com/r/www/cache/static/global/img/icons_37d13939.png" (specified by argument number 9)   [MsgId: MMSG-26577]

 Action.c(20): Downloading resource "http://s1.bdstatic.com/r/www/cache/static/sug/js/bdsug_31b8d653.js" (specified by argument number 11)

 [MsgId: MMSG-26577]

 Action.c(20): Downloading resource "http://www.baidu.com/favicon.ico" (specified by argument number 13)   [MsgId: MMSG-26577]

 Action.c(20): Downloading resource "http://passport.baidu.com/passApi/js/uni_login_wrapper.js?cdnversion=1400118095796&_=1400118095656" (specified by argument number 16)   [MsgId: MMSG-26577]

 Action.c(20): Downloading resource "http://suggestion.baidu.com/su?wd=&zxmode=1&json=1&p=3&sid=4948_6429_1450_5223_6505_4760_6017_6462_6428_6456_6454&cb=jQuery110208749060739643981_1400118095657&_=1400118095658" (specified by argument number 18)   [MsgId: MMSG-26577]

 Action.c(20): Found resource "http://www.baidu.com/img/baidu_jgylogo3.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): Found resource "http://www.baidu.com/img/bdlogo.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): Found resource "http://www.baidu.com/cache/global/img/gs-2.0.gif" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): Found resource "http://s1.bdstatic.com/r/www/cache/static/jquery/jquery-1.10.2.min_f2fb5194.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): Found resource "http://s1.bdstatic.com/r/www/cache/static/global/js/all_async_f712ea4c.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): Found resource "http://s1.bdstatic.com/r/www/cache/static/global/js/imsg_45172630.js" in HTML "http://www.baidu.com/"   [MsgId: MMSG-26659]

 Action.c(20): web_url("www.baidu.com") was successful, 106231 body bytes, 4084 header bytes, 59 chunking overhead bytes   [MsgId: MMSG-26385]

 Action.c(35): User created waste time to this point calculated by loadrunner = 0.758138

 Action.c(45): User created waste time calculated by timer = 7.646098

 Action.c(52): Total User created waste time = 8.404138

 Action.c(53): Transaction duration = 8.745259

 Action.c(55): Notify: Transaction "baidu" ended with "Pass" status (Duration: 8.7524 Wasted Time: 8.4041).

 Ending action Action.

 Ending iteration 1.

 Ending Vuser...

 Starting action vuser_end.

 Ending action vuser_end.

 Vuser Terminated.

运行的结果也证明了我之前的理解

 注：在最开始的时候，使用oracle两层协议录制脚本，一直不能演示出自身函数消耗的时间，lr_get_transaction_wasted_time的值都为0，后来使用http协议可以演示出来

LoadRunner去除事物中的程序的执行时间的更多相关文章

编写Java程序，读取文本文档的内容，去除文本中包含的“广告”字样，把更改后的内容保存到一个新的文本文档中
查看本章节查看作业目录需求说明: 读取文本文档的内容,去除文本中包含的"广告"字样,把更改后的内容保存到一个新的文本文档中实现思路: 在main() 方法中,使用 new F ...
去除WPF中3D图形的锯齿
原文:去除WPF中3D图形的锯齿理论上讲PC在计算3D图形的时候是无法避免不出现锯齿的,因为3D图形都是又若干个三角形组成,如果3D图形想平滑就必须建立多个三角形,你可以想象一下正5边形和正100边 ...
Python关于去除字符串中空格的方法
Python关于去除字符串中空格的方法在编写程序时我们经常会遇到需要将字符串中的空格去掉的情况,通常我们可以使用下面几种解决方法: 1.strip()方法:该方法只能把字符串头和尾的空格去掉,但是不 ...
【转】C#中WinForm程序退出方法技巧总结
C#中WinForm程序退出方法技巧总结一.关闭窗体在c#中退出WinForm程序包括有很多方法,如:this.Close(); Application.Exit();Application.Ex ...
[转]java去除List中重复的元素
java去除List中重复的元素如果用Set ,倘若list里边的元素不是基本数据类型而是对象, 那么请覆写Object的boolean equals(Object obj) 和int ...
mysql 时间格式与日期格式转换，去除datetime中的具体时间
DATE_FORMAT(`addtime`,'%Y-%m-%d') 时间格式转成字符串 time_format('1924-01-02', '%Y-%m-%d') 字符串转成时间格式 CONVERT ...
去除字符串中的html标记及标记中的内容
去除字符串中的html标记及标记中的内容 --1.创建函数 create function [dbo].[clearhtml] (@maco varchar(8000)) returns varcha ...
LoadRunner测试场景中添加负载生成器
如何在LoadRunner测试场景中添加负载生成器本文对如何在LoadRunner的测试场景中添加负载生成器,如何使用负载生成器的方法,总结形成操作指导手册,以指导测试人员指导开展相关工作. 1.什 ...
C#中WinForm程序退出方法技巧总结（转）
本文实例总结了C#中WinForm程序退出方法技巧.分享给大家供大家参考.具体分析如下: 在c#中退出WinForm程序包括有很多方法,如:this.Close(); Application.Exit ...

随机推荐

php前后端分离项目跨域问题解决办法
由于之前一直没有做过前后端分离项目,导致走了不少弯路,而且还采用了一种及其不优雅的方法 (在第一次请求的时候把服务器返回的session id保存起来,后续请求的时候把该session id作为参数传 ...
advanced bash shell guide读书笔记
http://note.youdao.com/noteshare?id=fc23a679849b4627d131d3ef07c74a71
清除localstorage
h5本地存储localStorage,sessionStorage. localStorage是没有失效时间的,sessionStorage的声明周期是浏览器的生命周期. 当浏览器关闭时,sessio ...
Bootstrap 按钮下拉菜单
向下拉 <div class="dropdown"> <button class="btn btn-default" data-toggle= ...
[php]require&require_once&include&include_once的用法与区别
1.require和include是php引入php文件的两种方式,使用格式如下: require(include) 文件名; require(include) 变量(此变量存储的是文件名); 2.区 ...
Spring websocket浏览器连接时出现404错误
1.场景在用websocket做一个简单的数据导入页面同步显示后台进度功能的时候,浏览器出现连接不上的错误: WebSocket connection to 'ws://localhost:8080 ...
js中不能做变量名的字符
JavaScript中不能作为变量名的关键字和保留字总结: 1.js中的关键字: break case catch continue default delete do else finally fo ...
Sublime之插件的安装（一）
由于最近刚换了一个工作,所以决定重新申请一个blog,把工作当中遇到的一些问题记录下来,方便自己下次忘记,也希望能与一起需要的小伙伴一起共勉. 如果有不同的观点或者是不同的看法,大家都可以畅谈,我一直 ...
HTTP、HTTPS
http是一种无状态协议,通过短暂保持浏览器核服务器间通信可以有效减少为保持连接而耗费的额外开销.无状态意味着浏览器和服务器完成一次通信后,连接会释放.在下一次会话发起时,浏览器核服务器端不会记录上一 ...
photoshop 安装问题
问题:“安装程序检测到计算机重新启动操作可能处于挂起状态.建议您退出安装程序,重新启动并重试.” 解决: 1.运行 regedit 打开注册表编辑器. 2.依次展开HKEY_LOCAL_MACHINE ...

LoadRunner去除事物中的程序的执行时间

LoadRunner去除事物中的程序的执行时间的更多相关文章

随机推荐

热门专题