[adamtj]

I think he was suggesting that you find the ATR on real-world production webservers, which has nothing to do with your test and would not confound it. Maybe in practice nobody sees an ATR > 30%, in which case your test, if correct, is irrelevant. What sort of loads produce an ATR > 60%? How common are they?

One problem with getting such numbers is that real world, the load is given, not the ATR, and the ATR for a given load may depend on implementation choices. Total connections is a function of server latency, and on a loaded system, latency can be a function of polling method. So switching methods may change your ATR.

On the other hand maybe ATR for a given load doesn't change significantly depending on implementation. Your test found what is best for a given ATR, but not necessarily for a given load, or how ATR depends on load for a given implementation. Depending on the results, you may want to add some hysteresis to superpoll.