I don't' think that is possible. I don't know of any command, other than the portstatsshow, porterrshow etc. showing ALL the counters so you can check the a specific type of counter with additional timestamp. And use the statsclear and slotstatsclear command to clear them certain period, so you can have a baseline.
Maybe the framelog command might help you. You can enable it and review it. It will show only about 40 discarded frames per second per chip on the chassis.I would think that would be too much of overhead on the switch CPU, to log each counter with timestamp.Regards,Ed