Tick lag all week! :,(


I would like to know why there has been an overload of tick lag for the past week because it is severely affecting all Xp farms all around the server. Including my Zombie spawner Xp trap. It normally can get me to level 30 in 25 minutes of afk. But with this tick lag, it would take the entire day to get up to level 30. I just have to know whats causing it. Please can someone help tell me who did it?