dynamic ratio

we have several application servers and load balancing using the observed mode.We have also a montiroing system which works fine.And now thinking to move towards dynamic ratio load balancing.

 

And for we are not sure about the method mfor dynamic ratio;

 

 

1)is it best if we use wmi for windows and simulate the f5isapi.dll by a servlet on java app. servers, but it may be expensive to use server threads

 

 

2)using an external type monitor on F5 and get the data from the monitoring system and set the ratio by scripting, but it may be expensive for F5 resources

 

 

3)on a 3rd party server , we can deploy a servlet and get the data from the monitoring and set it on F5 via icontrol., again is it too expensive to execute such a web service call on F5 every 60 seconds,,

 

 

 

Finally is it possible configure fallback monitor on dynamic ratio load balancing, in this case if the load configuring monitor stops, what would be the ratio,the last set values?

 

 

 

 

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