How to determine the LTM performance, the virtual server response time?

Here, i can suggest you few steps, which may help you to nail it down to an exact issue. 1. such performance issue with any other application hosted on same F5 reported?

1. if you know the ip addresses of real servers used in VIP, try to connect them in your Intranet environment, and see if you observe something.

    

2. sometimes we may need to use the load balancing algorithms, may be least connections (member) may work better as per the application instead of round robin algorithm.

    

3. if these servers are like shared, i mean these servers are serving requests and connections to other applications, then i would suggest using one connect profile. which will decrease the load on real servers.

    

4. May be if real servers area loaded reasonability, then approach adding few more physical or virtual machines into the VIP.

    

5. you can take advantage of SCCM tools which can also give you good performance statistics of system resources on these real servers.

    

--Ravi K. Malhotra--