Inb4threadlock
http://www.mmo-champion.com/threads/...-my-DPS-thread is where you want to go for the information you're seeking. Mods are trying to consolidate all the "Help my DPS" threads.
However, my advice is not to worry about it. Your DPS is going to be shit overall because you're on nests. Unless someone else flying is logging, you're going to be out of range for a HUGE portion of the fight. Even then, your DPS will be pretty shit since you're occasionally hitting adds, but a good portion is flying and having an eDPS of 0.
If you're doing well on other fights, you're fine. Ji-Kun isn't a fight you need to really worry about DPS (particularly Normal).