I'm hosting the recent Tekkit update for some friends - who started to complain about lag after around 20 minutes. After checking the network meter on my server machine I noticed it was uploading at 400kb/s average and it was choking the connection to the machine until everyone eventually timed out. When I log in to Tekkit the network meter spikes up from anywhere between 150 and 200kb/s and will carry on until I either time out or log out. This is with only 1 player so when my friends join it gets a lot worse.
I figured this was just the server sending the chunks to everyone when they log in. After around 30 minutes of sitting still and all the chunks appear to be loaded, the server is still sending out 150-200kb/s for what seems to be nothing really.
There is next to nothing in our world as we just started recently. I have tried turning off mobs and generating a new world but the "problem" still persists. I wasn't able to find anything related to this in the forum or anywhere on Google that could help. I would like to know if this is normal behavior from the Tekkit server as I don't remember the previous server being this network heavy.