用LoadRunner 函数监控Tomcat

scaoping

　　转自【http://se.csai.cn/testtools/200812240908031253.htm】
　　
　　LoadRunenr没有监控Tomcat的专用监控器，为了用lr达到监控tomcat的目的可以通过打开Tomcat自带的Status页面之后，利用lr的关联技术得到相关的数据，把数据输出到lr自定义的监控器中。
　　　1、打开Tomcat的status页面，方法为编辑Tomcat的conf目录下的tomcat-users.xml文件，在文件中添加
<tomcat-users>
<role rolename="manager"/>
<user username="admin" password="pass" roles="manager"/>
</tomcat-users>
　　　2、开发lr脚本
　　lr_start_transaction("monitor tomcat");
web_reg_save_param("JVMFreeMemory",
"LB=Free memory: ",
"RB= MB",
"Ord=1",
LAST);
web_reg_save_param("JVMTotalMemory",
"LB=Total memory: ",
"RB= MB",
"Ord=1",
LAST);

web_reg_save_param("JVMMaxMemory",
"LB=Max memory: ",
"RB= MB",
"Ord=1",
LAST);

web_url("status",
"URL=http://{ServerName}/manager/status",
"Resource=0",
"RecContentType=text/html",
"Referer=",
"Snapshot=t1.inf",
"Mode=HTTP",
LAST);

lr_end_transaction("monitor tomcat", LR_AUTO);

// Tomcat JVM metrics
lr_user_data_point("Tomcat JVM Free memory", atof(lr_eval_string("{JVMFreeMemory}")));
lr_user_data_point("Tomcat JVM Total memory", atof(lr_eval_string("{JVMTotalMemory}")));
lr_user_data_point("Tomcat JVM Max memory", atof(lr_eval_string("{JVMMaxMemory}")));


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