Optimal timeout and interval settings for Apache health monitor

I don't think there's anything better than lowering those values at the moment. interval of 5 seconds and timeout of 16 seconds is the default for most monitors I think, and assuming your servers can serve up responses fast enough, and you don't have too many (many thousands) of monitors, you can probably get away with interval=2, timeout=7. Keep in mind that if you set the values too low, the F5 may be able to process them in a timely manner, but you will suffer unexpected timeouts if for any reason the actual server itself was too busy to respond within the timeout.

Basically, it's a double-edged sword. If you lower it, you get faster failure detection at the risk of increasing the fraction of false-negatives.