用户访问某个网站或软件,一般不会不停地做个各种操作,例如一次查询,用户需要时间查看查询的结果是否是自己想要的。例如一次订单提交,用户需要时间核对自己填写的信息是否正确等。
也就是说用户在做某些操作时,是会有停留时间的,我把这个时间叫思考时间。但利用代码去执行的时候是没有时间的,当然,脚本运行本身是需要时间的,但比起人的思考时间要小很多。这也是我们为什么要用软件来代替人的某些工作。
但有时候,我们在做性能测试时,为了更真实的模拟用户的操作,需要给代码加入思考时间。来看看在loadrunner是如何设置思考时间的。
打开loadrunner 的Virtual User Generator
菜单栏:Vuser ---Run-Time settings...,切换到Thark Time选项
好吧!为了更好的理解这个界面上设置,现在我们通过一个脚本来分析。
Action() { double trans_time; //定义变量 web_url("www.baidu.com", "URL=http://www.baidu.com/", "Resource=0", "RecContentType=text/html", "Referer=", "Snapshot=t1.inf", "Mode=HTML", LAST); web_url("i-1.0.0.png", "URL=http://s1.bdstatic.com/r/www/img/i-1.0.0.png", "Resource=1", "RecContentType=image/png", "Referer=http://www.baidu.com/", "Snapshot=t2.inf", LAST); web_url("favicon.ico", "URL=http://www.baidu.com/favicon.ico", "Resource=1", "RecContentType=image/x-icon", "Referer=", "Snapshot=t3.inf", LAST); web_url("su", "URL=http://suggestion.baidu.com/su?wd=&cb=window.bdsug.sugPreRequest&sid=1466&t=1362316450913", "Resource=1", "RecContentType=baiduapp/json", "Referer=http://www.baidu.com/", "Snapshot=t4.inf", LAST); lr_start_transaction("注册"); //添加事务 lr_think_time(20); //设置思考时间 web_url("v.gif", "URL=http://nsclick.baidu.com/v.gif?pid=201&pj=www&rsv_sid=1466&fm=behs&tab=tj_reg&un=&path=http%3A%2F%2Fwww.baidu.com%2F&t=1362316485456", "Resource=1", "Referer=http://www.baidu.com/", LAST); web_url("favicon.ico_2", "URL=https://passport.baidu.com/favicon.ico", "Resource=1", "RecContentType=application/octet-stream", "Referer=", "Snapshot=t5.inf", LAST); web_link("注册", "Text=注册", "Snapshot=t6.inf", LAST); web_custom_request("urs.asmx", "URL=https://urs.microsoft.com/urs.asmx?MSURS-Client-Key=WI0pAZHPdb%2b3UDOD0AtzxA%3d%3d&MSURS-Patented-Lock=S1IpDfNCCC4%3d", "Method=POST", "Resource=0", "RecContentType=text/xml", "Referer=", "Snapshot=t7.inf", "Mode=HTML", "EncType=text/xml; charset=utf-8", "Body=<RepLookup v=\"3\"><G>ED8654D5-B9F0-4DD9-B3E8-F8F560086FDF</G><O>F03F2D77-79E1-4DEC-BBF8-81A5C0790160</O><D>9.0.8110.0</D><C>9.00.8112.16421</C><OS>6.1.7601.1.0</OS><I>9.0.8112.16421</I><L>zh-CN</L><R><Rq><URL>aHR0cHM6Ly9wYXNzcG9ydC5iYWlkdS5jb20vdjIvP3JlZyZyZWdUeXBlPTEmdHBsPW1uJnU9aHR0cCUzQSUyRiUyRnd3dy5iYWlkdS5jb20lMkY=</URL><O>PRE</O><T>TOP</T><HIP>220.181.111.48</HIP></Rq></R></RepLookup>", EXTRARES, "Url=https://passport.baidu.com/img/topbarnav_bg.png", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, "Url=https://passport.baidu.com/passApi/js/reg_6e270622.js", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, "Url=https://passport.baidu.com/passApi/img/small_blank_9dbbfbb1.gif", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, LAST); web_url("api", "URL=https://passport.baidu.com/v2/api/?getapi&tpl=mn&apiver=v3&tt=1362316491971&class=reg&callback=bd__cbs__c93h6w", "Resource=0", "RecContentType=text/html", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", "Snapshot=t8.inf", "Mode=HTML", EXTRARES, "Url=/img/v.gif?type=1®Type=mail", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, LAST); web_url("api_2", "URL=https://passport.baidu.com/v2/api/?getapi&tpl=mn&apiver=v3&tt=1362316491978&class=regPhone&callback=bd__cbs__xs2rv5", "Resource=0", "RecContentType=text/html", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", "Snapshot=t9.inf", "Mode=HTML", EXTRARES, "Url=/cgi-bin/genimage?001362316472015690A3686612594D3D2C14ABF30D0B432CF4462DF3A4B5A8E5E7B7EE094DCAB428311C96E23B35A3CB73A67533699084E25A27CF6C9745497B5C5435611E0593A615CC284B27D70CA5FFB5F771E5D7DC9EE266F6FD61A2D88FEC7B7BA20EFF5DE2CD301E011E634D5063BDDCD35A47C1EB7B5EF365B347DD5800C612B744FAEF845540239F1036CC800902957BD17F36F6547B71C198C154162F8F71077B935E6B", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, "Url=/img/bd-split.gif", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, "Url=/img/reg_tip_header_t.gif", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, "Url=/img/reg_tip_bg_bottom.gif", "Referer=https://passport.baidu.com/v2/?reg®Type=1&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2F", ENDITEM, LAST); trans_time=lr_get_transaction_wasted_time("注册"); //获得消耗时间 if (trans_time) { lr_output_message("The duration up to the submit is %f seconds",trans_time); //打印输出消耗实时间 }else{ lr_output_message("the duration cannot be determined. "); } lr_end_transaction("注册",LR_AUTO); //事务结束 return 0; }
脚本有点长,但不要被吓到了,重要的几句我已经加了注释。你只用关注那几行就行了。
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