MC 1.6.4 - x64 not working / x32 memory problems

[TFS]

Hi everyone,

as this has not much to do with the FTB-Launcher (except the mods), i also hope to get some help here because the official minecraftforum doesnt really support modded clients (at least there seem to be nobody around who cares of).

So here is my problem:
I cant start minecraft 1.6.4 with java x64 with more than ~95 active mods.
Forge just stops loading in the middle of nowhere like this:

2013-12-04 01:45:59 [FINE] [Railcraft] Init Phase
2013-12-04 01:45:59 [FINER] [Railcraft] Init-Second Start: ModuleCore
2013-12-04 01:45:59 [FINEST] [Railcraft] Sent event FMLInitializationEvent to mod Railcraft
2013-12-04 01:45:59 [FINEST] [TwilightForest] Sending event FMLInitializationEvent to mod TwilightForest
(Stopping here, MC uses 0% of CPU at this time and wont do anything the next 10min or more)

When I start MC 1.6.4 (x64) with less than ~95mods it runs fine.

When I start MC 1.6.4 (x32) with every mod (about 110mods) it stops loading with OutOfMemoryError or (if i remove some mods) i can get to the main menu, but when i start playing i quickly run into memory errors after a few minutes (console says memerror and lagging like hell) - thats because i cant run MC x32 with more than 1024mb RAM.

MC 1.6.4 (x32) Log:
http://www.mediafire.com/view/7duwcu9wj8qqs1v/ForgeModLoader-client-2.log

MC 1.6.4 (x64) Log:
http://www.mediafire.com/view/dprei9d7dtn1pet/ForgeModLoader-client-1.log

Why i cant run MC 1.6.4 in x64-mode with that much mods?

--Moderator Redacted download information--

Modlist (Trying to rebuild a new Unleashed-Pack from FTB) :

1.6.4 DamageIndicatorsv2.9.1.6.zip
appeng-rv14-finale-mc16x.jar
BiblioCraft[v1.4.0].zip
BiblioWoods[BiomesOPlenty][v1.2].zip
BiblioWoods[Forestry][v1.2].zip
BiomesOPlenty-universal-1.6.4-1.1.3.308.jar
buildcraft-A-1.6.4-4.2.1.jar
ChickenChunks 1.3.3.3.jar
compactsolars-universal-1.6.4-4.4.19.224.zip
ComputerCraft1.57.zip
DartCraft Beta 0.2.13.jar
DenPipes-1.6.4-2.1.18.jar
DenPipes-Emerald-1.6.4-1.1.5.jar
EnchantingPlus-1.16.5.zip
EnderStorage 1.4.3.5.jar
extrautils-1.0.zip
Factorization-0.8.18.jar
flatsigns-1.6.2-universal-1.4.0.15.jar
forestry-A-2.3.0.7.jar
Galacticraft-1.6.2-2.0.7.902.jar
Galacticraft-Planets-1.6.2-2.0.7.902.jar
GravityGun2.0.0.zip
Hats2.0.2.zip
IC2NuclearControl-1.6.2c-ic2-experimental.zip
iChunUtil2.4.0.zip
industrialcraft-2_2.0.307-experimental.jar
InfiniBows-1.6.4-universal-coremod-1.2.0.14.jar
InventoryTweaks-MC1.6.2-1.56-b77.jar
ironchest-universal-1.6.4-5.4.1.637.zip
MFFS_v3.5.0.254.jar
MineFactoryReloaded-2.7.3-179.jar
miscperipherals-3.4b2.zip
mod_zGraviSuite_1_9_8_MC_1_6_4_IC_EXP.zip
mystcraft-uni-1.6.4-0.10.11.00.zip
Natura_1.6.X_2.1.12.2.jar
neiaddons-1.6.2-1.9.3.r47.jar
obsidiplates-1.6.2-universal-2.0.0.15.jar
OpenBlocks-1.2.2.jar
OpenPeripheral-0.2.1-preview8.jar
PluginsforForestry-1.6.4-3.2.30.jar
PortalGun2.0.1.zip
PortalGunSounds.pak
ProjectRedBase-1.6.4-4.1.0.13.jar
ProjectRedCompat-1.6.4-4.1.0.13.jar
ProjectRedIntegration-1.6.4-4.1.0.13.jar
ProjectRedLighting-1.6.4-4.1.0.13.jar
ProjectRedWorld-1.6.4-4.1.0.13.jar
Railcraft_1.6.2-8.2.0.0.jar
SoulShards-2.0.14-universal-srg.jar
StevesCarts2.0.0.b2.zip
TConstruct_1.6.4_1.5.1.jar
Thaumcraft4.0.5b.zip
ThaumicTinkerer 2.0-40.jar
ThermalExpansion-3.0.0.b8.jar
twilightforest-1.20.3.jar
WR-CBE 1.4.0.6.jar
ZansMinimap1.6.4.zip

 

[Vauthil]

Yes, generally speaking you shouldn't anticipate people rushing here because, well, this forum is for supporting (a) our launcher (b) our modpacks. Requests for support on things unrelated to that tend to lie fallow. That said, I think this may be quick enough to address for me to ask this: what JVM flags are you using on your instance?

I think you don't have your PermGen expanded enough. For more robust packs, expanding PermGen is basically a must (short and sloppy explanation: PermGen's the memory space where the code itself actually takes up space; normal memory allocation is for the game world and such). I have a personal pack I share with some friends that's fairly comparable to this modlist and without using some JVM flag tweaking it in fact has had the same problem yours has had on loading.

For a set of flags I can personally recommend evaluating, see this thread from Eyamaz. I use those with my 1.6.4 instances and don't have these issues myself. When my friend having the same issue picked up using those flags, he also stopped having this issue.

Moderator's Note: I have removed your link to your pack download. That's not allowed around here.

 

[TFS]

Thank you very much for even supporting me!!!
Yes with arguments its finally working for me Hadn't set anything in JVM-Arguments...