LoadRunner???????????

???????????lr_user_data_point??????????????????????????С?????

double showsomething();
Action()
{
double val;
val = showsomething();
for(;;)
{
lr_user_data_point("something"??val);
lr_think_time(5);
}
return 0;
}
double showsomething()
{
return 100;
} 

??????controller?????????????????“User Defined Data Points”???showsomething()??????????????????????????mysql????м?????軔showsomething??д????mysql???????????????ɡ?
????loadrunner???????????????????
????lr_user_data_point
????lr_user_data_point_ex
????lr_user_data_point_instance
????lr_user_data_point_instance_ex
??????????÷?????ο?loadrunner???????