许多文章都在讲如何根据iis log 进行模拟测试，不幸的是这些文章要么不正确、不完整或者有表述错误，就是没有对应当前的产品版本，或者没有处理windows 验证，下面的流程已经成功应用于产生重复的负载测试

一下案例使用了log parser2.2和WCAT 6.3

方案：

1) 安装Log Parser 2.2

http://theether.net/download/Microsoft/IIS/LogParser.msi

将下面的的模板文件和sql命令copy到 %ProgramFiles%\Log Parser 2.2 目录下:

http://theether.net/download/Microsoft/IIS/wcat.sql

SELECTOUT_ROW_NUMBER() as ID,STRCAT(cs-uri-stem, REPLACE_IF_NOT_NULL(cs-uri-query,STRCAT('?', realQueryString))) AS URI,count(*) AS WEIGHT,case sc-status when 304 then 200 when 206 then 200 else sc-status end as STATUSCODE
usingextract_token(cs-uri-query,0,'|') as realQueryString
INTO %outfile%
FROM %logfile%
WHEREcs-method = 'GET'and STATUSCODE = 200
GROUP BY URI, STATUSCODE
ORDER BY WEIGHT DESC

http://theether.net/download/Microsoft/IIS/wcat.tpl

<LPHEADER>
scenario
{name    = "Generated Using Log Parser";warmup      = 30;duration    = 120;cooldown    = 10;default{setheader{name    = "Host";value   = "intranet";}setheader{name    = "Connection";value   = "keep-alive";}setheader{name    = "User-Agent";value   = " Mozilla/4.0 (compatible; MSE 6.0; Windows NT 5.1; SV1)";}version     = HTTP11;close       = ka;}
</LPHEADER><LPBody>transaction{id = "URL %ID%";weight = %WEIGHT%;request{url         = "%URI%";statuscode  = %STATUSCODE%;}}
</LPBODY>
<LPFOOTER>
}
</LPFOOTER>

http://theether.net/download/Microsoft/IIS/wcat.NTLM.tpl

<LPHEADER>
scenario
{name    = "Generated Using Log Parser";warmup      = 30;duration    = 120;cooldown    = 10;default{setheader{name    = "Host";value   = "intranet";}setheader{name    = "Connection";value   = "keep-alive";}setheader{name    = "User-Agent";value   = " Mozilla/4.0 (compatible; MSE 6.0; Windows NT 5.1; SV1)";}version     = HTTP11;close       = ka;}
</LPHEADER><LPBody>transaction{id = "URL %ID%";weight = %WEIGHT%;request{url         = "%URI%";statuscode  = 401;}request{url         = "%URI%";authentication = NTLM;username = "DOMAIN\\user";password = "password";statuscode  = %STATUSCODE%;}}
</LPBODY>
<LPFOOTER>
}
</LPFOOTER>

copy iis log文件到 %ProgramFiles%\Log Parser 2.2 目录下.

2) 生成 WCAT 脚本
2a) IIS中使用了匿名验证 Using Anonymous Authentication on IIS

在命令行中执行如下命令:

CD "\Program Files\Log Parser 2.2"
Logparser file:WCat.sql?logfile=*.log+outfile=CurrentLog.ubr -i:IISW3C -o:tpl -tpl:WCat.tpl

(missing -i:IISW3C parameter courtesy Scott Stafford)

2b) IIS中使用windows 验证的

编辑wcat.NTLM.tpl并更新domain，user和password
Edit wcat.NTLM.tpl and update DOMAIN, user and password.

命令行中执行：

CD "\Program Files\Log Parser 2.2"
Logparser file:WCat.sql?logfile=*.log+outfile=CurrentLog.ubr -i:IISW3C -o:tpl -tpl:WCat.NTLM.tpl

3) 在测试机上安装 WCAT

在控制机上安装WCAT

http://theether.net/download/Microsoft/IIS/wcat.x86.msi 
http://theether.net/download/Microsoft/IIS/wcat.amd64.msi

拷贝 "%ProgramFiles%\Log Parser 2.2\CurrentLog.ubr" 脚本文件到 %ProgramFiles%\wcat 目录下.

在客户机上安装WCAT:

命令上执行

CD "\Program Files\wcat"
cscript wcat.wsf -update -clients localhost Test1

注意：这个命令会把wcclient安装在控制机和Test1这台客户机上，并会立即重启所有的客户端
Note: This will install the WCAT client (wcclient.exe) on the controller and the Test1 host. This will reboot all clients immediately.

4) 启动WCAT控制器

命令行中执行：

CD "\Program Files\wcat"
start wcctl.exe -t currentlog.ubr -s webserver.domain.com -c 2 -v 500

注释：-c 参数定义了控制器要等待几个客户机连接
Note: The -c parameter specifies the number of clients to wait for.

5) 启动客户端

在控制机上启动客户端:

CD "\Program Files\wcat"
start wcclient.exe localhost

在客户机上启动客户端:

CD "%windir%\wcat"
start wcclient.exe controller.domain.com

6) 查看测试结果

控制机上执行如下cmd命令:

iexplore %ProgramFiles%\wcat\log.xml