本节书摘来自异步社区《LoadRunner 12七天速成宝典》一书中的第2章，第2.6节第二个性能测试案例，作者陈霁，更多章节内容可以访问云栖社区“异步社区”公众号查看。

2.6　第二个性能测试案例
云云：烤鱼吃得很爽。

恋恋：就是你非要吃香辣味的，害得我嘴巴都麻了。

云云：香辣味的好吃，就是鲶鱼吃得有点腻，能吃黑鱼就好了。

恋恋：下次多找几个人一起吃饭啊，这下他们生意就更好了。

云云：那么我问你一下点一样的鱼和点不同的鱼有什么区别？

恋恋：嘿，你又要考我啦，其实刚才你还没提问，我脑子里面就在想这个问题了。

云云：哦，美美狗开窍了？

恋恋：不但我是美美狗还是聪聪狗，你那点小花样我早看出来了。

云云：那么你说说，让我欣赏一下你的“光芒”。

恋恋：这个问题按照你的思路，我可以先从我公司门口的食堂说起，一般食堂都有固定的菜色，因为烧同样的东西处理能力强、成本低，而如果为每一个顾客单独炒菜，那么成本就会高很多。

云云：你这个跑题有点远啊！

恋恋：所以作为顾客，我们一般几个人都点相同的菜，这样厨子烧的快，无论从配菜，到烧菜都会并行处理。总的来说就是，如果每个人都要不同的东西，会让一个饭店很忙，处理能力降低，而如果要的东西类似，那么就会极大地提高处理效率，从而增加营业额。

云云：哎哟，貌似靠谱了。

恋恋：作为软件系统来说也是这样，如果每次对服务器发出的请求不同，那么服务器也会为每一个请求单独计算，从而会让服务器很忙，提高效率就是要让客户做的事情尽量相同，然后服务器就可以并行处理了。

云云：嗯，不错，不过有些不太专业。

恋恋：比如A和B做相同的请求，那么对于数据库来说查询的内容都相同，那么就可以只计算一次，然后内容就可以一次发给客户啦，就好像两个人都点宫保鸡丁炒饭一样，一次炒制，两盘出锅。

云云：虽然请求相同，但是可能因为业务不同而导致结果不同啊，比如A是管理员能看所有的记录，而B是普通用户只能看自己的记录！

恋恋：这个……

云云：那你觉得请求应该相同还是不相同呢？

恋恋：我觉得请求应该不同，因为你既然让我把脚本动起来，还给我说怎么做参数变量、处理业务，本质上就是要让每次输入的东西都不一样。

云云：没错，如果每次请求都一样，那么服务器会自动使用Cache机制，这也是一个使服务器提高处理能力的策略，当发现请求或者查询内容相同，系统会先从缓存（内存）中查找是否存在匹配的记录，如果有就返回，否则就执行一次，将结果存放入缓存，唯一特例就是所谓的要做及时查询，就是锁概念。

恋恋：嗯，我也听说过什么MemCache、PGA&SGA还有啥JVM内存管理，都是和缓存有关系，锁这个概念我就不太懂了。

云云：锁这个概念怎么说呢，这样吧，你知道12306买火车票难吧。

恋恋：知道啊，不知道谁做那么差个系统，查个火车票都经常刷不出来。

云云：这就叫做外行看热闹，内行看门道。其实做火车订票系统是很难的，因为查票是及时的，要锁定票。

恋恋：Go on！

云云：每当一张票被订的时候，所有的查询都要得到全新的少了一张票的情况，所有的订票都要告诉别人这个位置的这个票已经被订了。所以当成千上万的人去买票的时候，一张票被锁定会影响几万个查询，每次查询都不能用Cache，否则会得到错误的信息，你明明看到这个票有，但是订的时候却失败。

恋恋：Go on！

云云：这里面还有更复杂的业务，比如从上海到北京的高铁，如果我订了一张从南京到天津的票，就意味着会多一张上海到南京的票，还有一张从天津到北京的票！

恋恋：那么怎么优化呢？

云云：很简单，首先不要做及时查询，例如不要直接给每个客户看有多少张剩票，其次当一张票订了后，不要立即计算出可能导致生成的部分路程的票，最后将坐全程的票和坐半程的票位置分开做表分离，这样就算买了半程票影响的记录会比较少，处理起来相对简单，让专门的服务器去处理多程票！

恋恋：来吃个梨，你看又进入状态了吧，后面一个人就亢奋的说啊说啊，完全不管别人懂不懂。

云云：真是好心没有好报，看在你给我削梨的举动上就原谅你了。睡觉前是不是可以做第二个性能测试案例了啊。

恋恋：今天晚上要做啥啊？

云云：做一个脚本比较一下点击相同的帖子和点击不同的帖子的性能有何区别！

恋恋：好，开工。

**小结
理解动态访问会带来的负载点及系统处理业务的逻辑概念。
录制脚本运行
**
恋恋：打开LR启动VuGen录制一个脚本。

云云：别忘了你首先要有那么多帖子，否则你查询不到。

恋恋：对，那么先录一个生成帖子的脚本吧。

（几分钟过去后）

恋恋：脚本生成。

Action()
{
    int i;
    web_add_cookie("38We_2132_sid=NDgF6W; DOMAIN=127.0.0.1");
    web_add_cookie("38We_2132_lastvisit=1462200716; DOMAIN=127.0.0.1");
    web_add_cookie("38We_2132_lastact=1462204316%09home.php%09misc; DOMAIN=127.0.0.1");
    web_add_cookie("38We_2132_onlineusernum=1; DOMAIN=127.0.0.1");
    web_add_cookie("38We_2132_sendmail=1; DOMAIN=127.0.0.1");
    web_url("discuz", 
        "URL=http://127.0.0.1/discuz/", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=", 
        "Snapshot=t2.inf", 
        "Mode=HTML", 
        EXTRARES, 
        　　  "Url=static/image/common/background.png", "Referer=http://127.0.0.1/discuz/forum.　php", ENDITEM, 
              "Url=static/image/common/search.gif", "Referer=http://127.0.0.1/discuz/forum.php", ENDITEM, 
              "Url=static/image/common/chart.png", "Referer=http://127.0.0.1/discuz/forum.php", ENDITEM, 
              "Url=static/image/common/px.png", "Referer=http://127.0.0.1/discuz/forum.php", ENDITEM, 
              "Url=static/image/common/qmenu.png", "Referer=http://127.0.0.1/discuz/forum.php", ENDITEM, 
              "Url=static/image/common/nv.png", "Referer=http://127.0.0.1/discuz/forum.php", ENDITEM, 
              "Url=static/image/common/titlebg.png", "Referer=http://127.0.0.1/discuz/forum. php", ENDITEM, 
        "Url=static/image/common/nv_a.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/cls.gif", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        LAST);
    web_submit_data("member.php", 
        "Action=http://127.0.0.1/discuz/member.php?mod=logging&action=login&loginsubmit   
              =yes&infloat=yes&inajax=1", 
        "Method=POST", 
        "TargetFrame=", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t3.inf", 
        "Mode=HTML", 
        ITEMDATA, 
        "Name=fastloginfield", "Value=username", ENDITEM, 
        "Name=username", "Value=admin", ENDITEM, 
        "Name=password", "Value=123456", ENDITEM, 
        "Name=quickforward", "Value=yes", ENDITEM, 
        "Name=handlekey", "Value=ls", ENDITEM, 
        "Name=questionid", "Value=0", ENDITEM, 
        "Name=answer", "Value=", ENDITEM, 
        LAST);
    web_add_cookie("38We_2132_lastact=1462204476%09forum.php%09; DOMAIN=127.0.0.1");
    web_url("forum.php", 
        "URL=http://127.0.0.1/discuz/forum.php", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t4.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=uc_server/images/noavatar_small.gif", ENDITEM, 
        "Url=static/image/common/user_online.gif", ENDITEM, 
        "Url=static/image/common/arrwd.gif", ENDITEM, 
        LAST);
    web_add_cookie("38We_2132_checkpm=1; DOMAIN=127.0.0.1");
    web_add_cookie("38We_2132_smile=1D1; DOMAIN=127.0.0.1");
    web_url("默认版块", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t5.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=data/cache/style_1_forum_moderator.css?z69", "Referer=http://127.0.0.1/   
              discuz/forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/smile.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/sad.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/cry.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/biggrin.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/shocked.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/huffy.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/shy.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/tongue.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/mad.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/titter.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/sweat.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/loveliness.gif", "Referer=http://127.0.0.1/   
              discuz/forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/funk.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/lol.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/curse.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/hug.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/sleepy.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/time.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/dizzy.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/shutup.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/victory.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/kiss.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/call.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/smiley/default/handshake.gif", "Referer=http://127.0.0.1/   
              discuz/forum.php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pt_icn.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_r.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/fav.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_l.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/feed.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pt_item.png", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/recyclebin.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/atarget.png", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/editor/editor.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/mdly.png", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pollsmall.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=forumdisplay&fid=2", ENDITEM, 
        LAST);
    web_add_cookie("38We_2132_editormode_e=1; DOMAIN=127.0.0.1");
    web_url("高级模式", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=post&action=newthread&fid=2", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "Snapshot=t6.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/card_btn.png", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=post&action=newthread&fid=2", ENDITEM, 
        "Url=static/image/common/notice.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=post&action=newthread&fid=2", ENDITEM, 
        "Url=static/image/common/upload.swf?site=/discuz/misc.php%3fmod=swfupload%26type   
              =image%26fid=2&type=image&random=O2WM", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod =post&action=newthread&fid=2", ENDITEM, 
        "Url=static/image/common/upload.swf?site=/discuz/misc.php%3fmod=swfupload%26fid   
              =2&random=pm3E", "Referer=http://127.0.0.1/discuz/forum.php?mod=post&action=   
              newthread&fid=2", ENDITEM, 
        LAST);
    for(i=0;i<1000;i++)
    {
    web_submit_data("forum.php_2", 
        "Action=http://127.0.0.1/discuz/forum.php?mod=post&action=newthread&fid=2&extra   
              =&topicsubmit=yes", 
        "Method=POST", 
        "TargetFrame=", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=post&action=newthread&fid=2", 
        "Snapshot=t7.inf", 
        "Mode=HTML", 
        ITEMDATA, 
        "Name=formhash", "Value=27ad1fe9", ENDITEM, 
        "Name=posttime", "Value=1462204484", ENDITEM, 
        "Name=wysiwyg", "Value=1", ENDITEM, 
        "Name=subject", "Value=第二天测试专用{topic}", ENDITEM, 
        "Name=message", "Value=美美狗代表云层天咨发帖了{topic}", ENDITEM, 
        "Name=save", "Value=", ENDITEM, 
        "Name=uploadalbum", "Value=", ENDITEM, 
        "Name=newalbum", "Value=", ENDITEM, 
        "Name=readperm", "Value=", ENDITEM, 
        "Name=price", "Value=", ENDITEM, 
        "Name=usesig", "Value=1", ENDITEM, 
        "Name=allownoticeauthor", "Value=1", ENDITEM, 
        EXTRARES, 
        "Url=uc_server/images/noavatar_middle.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=data/cache/style_1_forum_viewthread.css?z69", "Referer=http://127.0.0.1/   
              discuz/forum.php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/js/forum_viewthread.js?z69", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=868&extra=", ENDITEM, 
        LAST);
    }
    web_custom_request("home.php", 
        "URL=http://127.0.0.1/discuz/home.php?mod=spacecp&ac=pm&op=checknewpm&rand   
              =1462204515", 
        "Method=GET", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=viewthread&tid=868&extra=", 
        "Snapshot=t8.inf", 
        "Mode=HTML", 
        "EncType=application/x-www-form-urlencoded", 
        EXTRARES, 
        "Url=static/image/common/flbg.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/rec_add.gif", "Referer=http://127.0.0.1/discuz/forum.  
              php? mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/oshr.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/rec_subtract.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/fastreply.gif", "Referer=http://127.0.0.1/discuz/ forum.  
              php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/midavt_shadow.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/repquote.gif", "Referer=http://127.0.0.1/discuz/ forum.  
              php?mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/edit.gif", "Referer=http://127.0.0.1/discuz/ forum.php?  
              mod=viewthread&tid=868&extra=", ENDITEM, 
        "Url=static/image/common/popupcredit_bg.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=868&extra=", ENDITEM, 
        LAST);
    return 0;
}

恋恋：这里我用了一个循环，做了1000次。

云云：那么你发帖的那个参数是？

恋恋：{topic}啊，这是我定义的一个时间参数，这样每次帖子都不一样，如图2-23所示。

云云：哎哟，不错哦。

恋恋：好了，单击运行，我去给你削个梨。

云云：好！不过，如果你用场景，运行会快一些。

恋恋：好啊，你自己削梨去，EQ真低。

云云：我错了，还是你帮我削吧。

（几分钟后，帖子生成）如图2-24所示。

恋恋：接着我要录制一个用户随机访问帖子的脚本和一个用户访问一个固定帖子的脚本。

Action()
{
    web_url("discuz", 
        "URL=http://127.0.0.1/discuz/", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=", 
        "Snapshot=t1.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/background.png", "Referer=http://127.0.0.1/discuz/forum.　  
              php", ENDITEM, 
        "Url=static/image/common/search.gif", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/nv.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/px.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/titlebg.png", "Referer=http://127.0.0.1/discuz/forum.　  
              php", ENDITEM, 
        "Url=static/image/common/nv_a.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/qmenu.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/chart.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        LAST);
    lr_think_time(5);
    web_url("默认版块", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t2.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/pt_icn.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pt_item.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arrwd.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/fav.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/feed.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_l.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_r.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/atarget.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/editor/editor.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        LAST);
    lr_think_time(4);
    web_url("第二天测试专用2016-05-03 00:09:10.850", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=viewthread&tid=1867&extra=page%3D1", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "Snapshot=t3.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=uc_server/images/noavatar_middle.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/oshr.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_add.gif", "Referer=http://127.0.0.1/discuz/forum.  
              php? mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/midavt_shadow.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/fastreply.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_subtract.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/flbg.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/repquote.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        LAST);
    return 0;
}

恋恋：找到看帖请求的那个函数，然后将这个请求内容做一个参数化，参数名称叫作tid，并且设置从1～1000的随机数，如图2-25所示。

Action()
{
    web_url("discuz", 
        "URL=http://127.0.0.1/discuz/", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=", 
        "Snapshot=t1.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/background.png", "Referer=http://127.0.0.1/discuz/forum.   
              php", ENDITEM, 
        "Url=static/image/common/search.gif", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/nv.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/px.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/titlebg.png", "Referer=http://127.0.0.1/discuz/forum.   
              php", ENDITEM, 
        "Url=static/image/common/nv_a.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/qmenu.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/chart.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        LAST);
    lr_think_time(5);
    web_url("默认版块", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t2.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/pt_icn.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pt_item.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arrwd.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/fav.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/feed.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_l.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_r.gif", "Referer=http://127.0.0.1/discuz/ forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/atarget.png", "Referer=http://127.0.0.1/discuz/forum.  
              php? mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/editor/editor.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        LAST);
    lr_think_time(4);
    web_url("第二天测试专用2016-05-03 00:09:10.850", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=viewthread&tid={tid}&extra=page%3D1", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "Snapshot=t3.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=uc_server/images/noavatar_middle.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/oshr.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_add.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/midavt_shadow.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/fastreply.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_subtract.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/flbg.gif", "Referer=http://127.0.0.1/discuz/forum. php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/repquote.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        LAST);
    return 0;
}

恋恋：最后还要在查询前后加个事务，让脚本运行的时候能够统计响应时间，先来试着运行一下。

Action()
{
    web_url("discuz", 
        "URL=http://127.0.0.1/discuz/", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=", 
        "Snapshot=t1.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/background.png", "Referer=http://127.0.0.1/discuz/forum.   
              php", ENDITEM, 
        "Url=static/image/common/search.gif", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/nv.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/px.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/titlebg.png", "Referer=http://127.0.0.1/discuz/forum.   
              php", ENDITEM, 
        "Url=static/image/common/nv_a.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/qmenu.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        "Url=static/image/common/chart.png", "Referer=http://127.0.0.1/discuz/forum.php",   
              ENDITEM, 
        LAST);
    lr_think_time(5);
    web_url("默认版块", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php", 
        "Snapshot=t2.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=static/image/common/pt_icn.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/pt_item.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arrwd.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/fav.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/feed.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_l.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/arw_r.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/common/atarget.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        "Url=static/image/editor/editor.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=forumdisplay&fid=2", ENDITEM, 
        LAST);
    lr_think_time(4);
    lr_start_transaction("viewtopic");
    web_url("第二天测试专用2016-05-03 00:09:10.850", 
        "URL=http://127.0.0.1/discuz/forum.php?mod=viewthread&tid={tid}&extra=page%3D1", 
        "TargetFrame=", 
        "Resource=0", 
        "RecContentType=text/html", 
        "Referer=http://127.0.0.1/discuz/forum.php?mod=forumdisplay&fid=2", 
        "Snapshot=t3.inf", 
        "Mode=HTML", 
        EXTRARES, 
        "Url=uc_server/images/noavatar_middle.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/oshr.png", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_add.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/midavt_shadow.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/fastreply.gif", "Referer=http://127.0.0.1/discuz/ forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/rec_subtract.gif", "Referer=http://127.0.0.1/discuz/   
              forum.php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/flbg.gif", "Referer=http://127.0.0.1/discuz/forum.php?   
              mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        "Url=static/image/common/repquote.gif", "Referer=http://127.0.0.1/discuz/forum.   
              php?mod=viewthread&tid=1867&extra=page%3D1", ENDITEM, 
        LAST);
lr_end_transaction("viewtopic", LR_AUTO);
    return 0;
}

恋恋：代码运行大功告成！

云云：值得表扬！

（分别运行未参数化和参数化过的脚本）。

恋恋：好像查询条件是随机的会慢一点。

云云：Go On。

恋恋：OK，搞定两个脚本，一个是原脚本，查询条件不变的；还有一个是查询条件是随机的内容，接着分别到场景里面去运行一下。

恋恋：场景里面要添加监控内容（Windows资源），单击开始运行。