Time frame really doesn't matter, to a degree.. The only time your body knows is TUT.. It knows no weight, just TUT.. If you can get in there and during your session smash some demons all the while TUT is at its level were you're drop setting and can barely complete sets of 30-40% of your existing load and you keep time intervals with rest limited in a narrow range, than you're heading in the right direction and optimizing on hypertrophy, the more intense the state of hyperemia is, the greater chance you will achieve your adjective..
If this can be done all the while without compromising your form, than I call that a good session in my book..

Always remember; Where were you mentally during those sets/reps? If there's no mind-muscle connection than you wasted your time...During those last few reps in each set, you must be in a state of fucking zen, an altered universe, it's just your will to drive and the mind to muscle connection..

Post-workout carbs/protein is equally or if not more important.. Capitalize on that window before it closes!

Get'er done...