I have configured Unix monitors( web server, portal, commerce, LDAP, database etc) and after going to certain user load LoadRunner stopped capturing webserver counters( displaying blanks), deleting them and re-adding into the list is capturing the metrics for a while and again goes away. I am guessing it might be a LR timeout issue, how much time does LR waits for the response?. Is there any workaround for this issue?
I've run into this before. In one instance it was a matter of the system-under-test being swamped to the point where the rstatd daemon couldn't get a time slice. Another instance of collection stoppage was due to the sheer volume of metrics collected. The collecting server was overwhelmed.