Server Lag

I run a minecraft server and its very lagy even when i run on a fast computer:

Xeon E3 1230 3.2 GHz (8 Cores With HT) ​

CPU​

8 GB​

RAM​

1x1,000 GB​

HARD DRIVE​

3,000 GB | Gigabit Port​

BANDWIDTH​

Plugins:​

AlphaChest, WorldEdit, NoCheatPlus, Vote4Craft, Buycraft, SimpleAnnouncer, SpamGuard, SimpleCommandSigns, Vault, PermissionsEx, WorldGuard, TopPVP, iConomy, DisguiseCraft, AntiAd, EnderChestViewer, IPL, LimitedCreative, BKCommonLib, Lockette, Modifyworld, ChangeGameMode, Essentials, VillagerBlock, EssentialsXMPP, EssentialsProtect, EssentialsSpawn, EssentialsGeoIP, Enjin Minecraft Plugin, xAuth, NoLagg, EssentialsChat, Factions​

​

​

Build:​

1.3.1-R2.0 (Build #02340)​

 

http://forums.bukkit.org/threads/you-need-help-we-need-this-information-to-help-you.2018/

Also internet speed.

 

Maybe you can try allocating more ram:

1. Go to your "run"

2. Right click & open with notepad

3. This will show up
@ECHO OFF
SET BINDIR=%~dp0
CD /D "%BINDIR%"
"%ProgramFiles%\Java\jre7\bin\java.exe" -Xms1024M -Xms1024M -jar craftbukkit.jar -nojline
PAUSE
4. You may choose the following sizes of ram:
The Memory Codes:
1GB 1024
2GB 2048
3GB 3072
4GB 4096
Replace 1024, with any numbers shown above
Hope this helps,