Tsung负载测试从mac os x

我正在尝试从我的Mac OS X机器上发出一个请求，但是我运气不太好。

我已经编辑了~/.tsung/tsung.xml配置文件，甚至多次尝试使用-f参数更改该文件的位置。

当我运行tsung start时，它返回如下输出

dave:/Applications/MAMP/htdocs/barebonessite/wp-content/themes/barebones $ tsung -f      ~/.tsung/tsung.xml -l . start
Starting Tsung
"Log directory is: /Applications/MAMP/htdocs/barebonessite/wp-   content/themes/barebones/./20130503-1325"
Config Error, aborting ! {{case_clause,{error,enoent}},
                      [{xmerl_scan,fetch_DTD,2,
                           [{file,"xmerl_scan.erl"},{line,1283}]},
                       {xmerl_scan,scan_doctype2,3,
                           [{file,"xmerl_scan.erl"},{line,1227}]},
                       {xmerl_scan,scan_prolog,4,
                           [{file,"xmerl_scan.erl"},{line,722}]},
                       {xmerl_scan,scan_document,2,
                           [{file,"xmerl_scan.erl"},{line,563}]},
                       {xmerl_scan,file,2,
                           [{file,"xmerl_scan.erl"},{line,249}]},
                       {ts_config,read,2,
                           [{file,"src/tsung_controller/ts_config.erl"},
                            {line,68}]},
                       {ts_config_server,handle_call,3,
                           [{file,
                                "src/tsung_controller/ts_config_server.erl"},
                            {line,198}]},
                       {gen_server,handle_msg,5,
                           [{file,"gen_server.erl"},{line,588}]}]}

我的配置文件是这样的:

<?xml version="1.0"?>
<!DOCTYPE tsung SYSTEM "/usr/share/tsung/tsung-1.0.dtd">
<tsung loglevel="notice" version="1.0">
  <clients>
    <client host='localhost' use_controller_vm='true'/>
  </clients>    
<servers>
    <server host="54.225.212.193" port="80" type="tcp"></server
</servers>
<load>
    <arrivalphase phase="1" duration="10" unit="minute">
        <users maxnumber="650" arrivalrate="8" unit="second"/>
    </arrivalphase>
</load>
<sessions>
    <session probability="100" name="ab" type="ts_http">
        <for from="1" to="20" var="i">
            <request> <http url="/" method="GET" version="1.1"/>   </request>
        </for>
    </session>
</sessions>
</tsung>

作为一个新手，我无法解决这里的问题，错误报告是相当低级的东西，没有什么意义。