Minecraft Forums

Hello,
I have self-modified minecraft client on version 1.5.2, with 101 mods. All time, client eat too much RAM, 5 Gb in average. So, after 1 or 2 minutes after starting play in the world, there is error in MultiMC console:
[WARNING] Can't keep up! Did the system time change, or is the server overloaded?

I think i found a solve, but waste 16 Gb of RAM is too expensive. Because my PC have 64Gb, so 16Gb for only one game is too much, really.

So, what I can do to minimize wasting of PC resources by minecraft?

My PC specs:
Intel Core i7 3,8 GHz
RAM 1600 MHz 64Gb
SSD 250Gb

UPD:
So, another one error!
part of log:

2013-08-14 21:08:29 [INFO] [STDERR] java.lang.OutOfMemoryError: PermGen space
2013-08-14 21:08:29 [INFO] [STDERR] at sun.misc.Unsafe.defineClass(Native Method)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.ClassDefiner.defineClass(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.MethodAccessorGenerator$1.run(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.MethodAccessorGenerator$1.run(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.MethodAccessorGenerator.generate(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.MethodAccessorGenerator.generateMethod(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-08-14 21:08:29 [INFO] [STDERR] at Reflector.callVoid(Reflector.java:258)
2013-08-14 21:08:29 [INFO] [STDERR] at Reflector.postForgeBusEvent(Reflector.java:467)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.management.PlayerInstance.sendThisChunkToPlayer(PlayerInstance.java:82)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.management.PlayerManager.func_72695_c(PlayerManager.java:296)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.management.ServerConfigurationManager.func_72367_e(ServerConfigurationManager.java:295)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.network.NetServerHandler.func_72565_c(NetServerHandler.java:167)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.management.ServerConfigurationManager.func_72392_r(ServerConfigurationManager.java:1059)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:375)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.integrated.IntegratedServer.func_71260_j(IntegratedServer.java:284)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:523)
2013-08-14 21:08:29 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

http://goo.gl/ShDJRQ - full log file(warning, 10 Mb text-file).


P.C. I'm from Russia, so that's reason why my English is very bad. Sorry for grammatical mistakes.