Help Please Severe Lag (MAC)

[Erry]

Hey guys my friends and I just recreated a new minecraft server using Tekkit. LOVE IT! I'm using my macbook pro

Processor 2.9 GHz Intel Core i7

Memory 8 GB 1600 MHz DDR3

Graphics Intel HD Graphics 4000 512 MB

Software OS X 10.8.3 (12D78)

I reverted my Java to 6 like I saw on the forums because of the crashing Java 7 caused hoping it would solve my issue.

My Issue: Since switching to tekkit I have extreme lag, I know its not my internet and I don't think it's my computer because I didn't have these issues when using the normal MC. My brother also plays on the server and he has no real lag issues. I will get really bad lag 10-15s and just jump around the map and it makes it impossible to kill monsters or really do anything. If anyone has a way to help it would be greatly appreciated. If you require further information please ask and I will provide. My settings are all turned off or as low as possible in the MC video settings, and I use Tiny distance

Thanks

[Erry]

anyone have an idea about this?

[plowmanplow]

1) Java 6? You really want to be using the latest version of Java 7 when running a Tekkit server, or client.

2) The resources required by a modded server like Tekkit can be an order of magnitude more than those required by vanilla MC.

3) Tekkit version 1.0.6 updated BuildCraft and made a HUGE improvement to the system resources required to run a server. Make sure you are up to date.

[watsonj11]

and it might just be your internet connection speed

to fix this either plug your computer into the router using a yellow network cable or move it closer

alternatively get better broadband/router

[plowmanplow]

There is literally an order of magnitude reduction in back-channel bandwidth usage from 1.0.5 to 1.0.6 so that goes high on the list of things to do.