Server Crashing, not enough ram, need help choosing

2013-03-12 11:22:47 [SEVERE] Exception in thread "Server thread"
2013-03-12 11:22:58 [SEVERE] Exception in thread "Thread-15"
2013-03-12 11:24:25 [INFO] Rcon connection from: /85.236.96.34
2013-03-12 11:24:26 [SEVERE] Exception in thread "Thread-465"
2013-03-14 08:56:11 [SEVERE] Exception in thread "Thread-14"
2013-03-14 08:56:15 [WARNING] Can't keep up! Did the system time change, or is the server overloaded?
2013-03-14 08:56:19 [INFO] Stopping server

is the errors i get.

Can't seem to figure out which plugin is using the most ram.

This is what i get when i type /gc

Maximum memory: 1,523 MB.
Allocated memory: 437 MB.
Free memory: 267 MB.

Here are the plugins:

Plugins (46): TuxTwoLib, Orebfuscatorf, MultiInv, PlugMan, WorldEdit, Buycraft, Vault, PlotMe, Multiverse-Core, PermissionsE, Stargate, WorldGuard, MCDocs, ProtectionStones, MagicSpells, SimplePenalty, CoreProtect, BookWorm, Permissions, CommandHelper, NoFarm, aLockettef, VariableTriggers, ScheduledAnnouncer2, Modifyworld, ExchangeMarket, Votifier, Herochat, mcMMO, MobArena, GAListener, Essentials, Citizens, Jobs, CreativeControl, EssentialsSpawn, EssentialsGeoIP, BOSEconomy, Enjin Minecraft Plugin, AutoRank, dynmap, MagicSpellsShop, CompatNoCheatPlus, DtlCitizensTrader, WorldBorder, NoCheatPlus

 

You realize you're allocating 458MB to a bukkit server... You need atleast 1GB to function properly.

 

Lol! XD
But how do you allocate more?
I have Windows 7 Ultimate 64 bits and 16GB RAM.

 

go to the folder where your server is rename bukkit craftbukkit open notepad paste this save it as a run.bat and save it in the folder your have craftbukkit in and then click on it then your server starts with 1024 gb of ram.


java -Xms1024M -Xmx1024M -jar craftbukkit.jar -o true
PAUSE