Minecraft Forums

So I'm very confused and wondering if any one has a solution to my problem. So I have more then enough RAM to run minecraft smoothly (16GB with 6 or 8 alllowed to the game itself) and it does to a with one exception. While playing the game it will,and to a point to where its almost predictable, completely freeze for about two to three seconds and then keep going, and it will do this repeatedly. So being the some what smart person I am hit f3 to see what my FPS and RAM was doing, At first nothing seemed out of the ordinary. However it wasnt until the game froze again that I started to notice a pattern. After the freeze my RAM usage in the game will drop down to 6-12% but will begin to climb steadily regardless of wether or not im moving ( i think moving speeded it up a bit) and the RAM usage will max out. If you guessed that my game froze you'd be correct and it will do it all over again. It deosnt matter how much of my RAM I throw at the game. Also ending all background apps does nothing. I have a great over all build, so i have no clue whats up.

I created a new world and gave it enough time to freeze a few times, this is the only log in my .minecraft folder i could find with any relavnce to the world in question idk how or if it will help but her you go,

[02:07:22] [Client thread/INFO]: Setting user: XxcazllyxX
[02:07:22] [Client thread/INFO]: (Session ID is token:c6f65200f7aa4c2e9561518533909696:0ba28e2b950d46ddae24b7e381d68d45)
[02:07:23] [Client thread/INFO]: LWJGL Version: 2.9.4
[02:07:23] [Client thread/INFO]: Reloading ResourceManager: Default
[02:07:24] [Sound Library Loader/INFO]: Starting up SoundSystem...
[02:07:24] [Thread-6/INFO]: Initializing LWJGL OpenAL
[02:07:24] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[02:07:24] [Thread-6/INFO]: OpenAL initialized.
[02:07:24] [Sound Library Loader/INFO]: Sound engine started
[02:07:25] [Client thread/INFO]: Created: 512x512 textures-atlas
[02:09:18] [Server thread/INFO]: Starting integrated minecraft server version 1.8.7
[02:09:18] [Server thread/INFO]: Generating keypair
[02:09:18] [Server thread/INFO]: Converting map!
[02:09:18] [Server thread/INFO]: Scanning folders...
[02:09:18] [Server thread/INFO]: Total conversion count is 0
[02:09:19] [Server thread/INFO]: Preparing start region for level 0
[02:09:20] [Server thread/INFO]: Preparing spawn area: 16%
[02:09:21] [Server thread/INFO]: Preparing spawn area: 36%
[02:09:22] [Server thread/INFO]: Preparing spawn area: 61%
[02:09:23] [Server thread/INFO]: Preparing spawn area: 84%
[02:09:23] [Server thread/INFO]: Changing view distance to 21, from 10
[02:09:24] [Server thread/INFO]: XxcazllyxX[local:E:86fbccd1] logged in with entity id 214 at (71.5, 63.0, 265.5)
[02:09:24] [Server thread/INFO]: XxcazllyxX joined the game
[02:09:34] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 10718ms behind, skipping 214 tick(s)
[02:09:48] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 7363ms behind, skipping 147 tick(s)
[02:10:03] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4767ms behind, skipping 95 tick(s)
[02:10:06] [Server thread/INFO]: Saving and pausing game...
[02:10:06] [Server thread/INFO]: Saving chunks for level 'Full circle'/Overworld
[02:10:07] [Server thread/INFO]: Saving chunks for level 'Full circle'/Nether
[02:10:07] [Server thread/INFO]: Saving chunks for level 'Full circle'/The End
[02:10:13] [Server thread/INFO]: Saving and pausing game...
[02:10:13] [Server thread/INFO]: Saving chunks for level 'Full circle'/Overworld
[02:10:13] [Server thread/INFO]: Saving chunks for level 'Full circle'/Nether
[02:10:13] [Server thread/INFO]: Saving chunks for level 'Full circle'/The End
[02:10:48] [Client thread/INFO]: [CHAT] Saved screenshot as 2015-07-02_02.10.48.png
[02:12:45] [Server thread/INFO]: Saving and pausing game...
[02:12:45] [Server thread/INFO]: Saving chunks for level 'Full circle'/Overworld
[02:12:46] [Server thread/INFO]: Saving chunks for level 'Full circle'/Nether
[02:12:46] [Server thread/INFO]: Saving chunks for level 'Full circle'/The End
[02:38:47] [Server thread/INFO]: Saving and pausing game...
[02:38:47] [Server thread/INFO]: Saving chunks for level 'Full circle'/Overworld
[02:38:47] [Server thread/INFO]: Saving chunks for level 'Full circle'/Nether
[02:38:47] [Server thread/INFO]: Saving chunks for level 'Full circle'/The End
[02:38:53] [Client thread/INFO]: Reloading ResourceManager: Default
[02:38:53] [Server thread/INFO]: Stopping server
[02:38:53] [Server thread/INFO]: Saving players
[02:38:53] [Server thread/INFO]: Saving worlds
[02:38:53] [Server thread/INFO]: Saving chunks for level 'Full circle'/Overworld
[02:38:53] [Server thread/INFO]: Saving chunks for level 'Full circle'/Nether
[02:38:53] [Server thread/INFO]: Saving chunks for level 'Full circle'/The End
[02:38:53] [Client thread/INFO]: SoundSystem shutting down...
[02:38:53] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
[02:38:53] [Sound Library Loader/INFO]: Starting up SoundSystem...
[02:38:53] [Thread-10/INFO]: Initializing LWJGL OpenAL
[02:38:53] [Thread-10/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[02:38:53] [Thread-10/INFO]: OpenAL initialized.
[02:38:54] [Sound Library Loader/INFO]: Sound engine started
[02:38:54] [Client thread/INFO]: Created: 512x512 textures-atlas
[02:38:57] [Client thread/INFO]: Stopping!
[02:38:57] [Client thread/INFO]: SoundSystem shutting down...
[02:38:57] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com

I feel like this is wrong but is the only log i could find. It says the server cant keep up but playing single player or am i not understanding the system right?

I have no idea here is my system info

OS:windows 7 home premium

Motherboard: Asus Maximums VII hero

CPU: intel i7 4770k hasawel

GPU: Nvida GTX 980

RAM: 8x2 gb corsair vengeance

power: evga super nova 1200 watt

Storage: Kingston ssd / WD hdd

I have an optical drive and liquid cooling pump(closed loop) foe the cpu if thats of any relevance.

If you need anymore info plz dont hesitate to ask I will happily give it to you. Thanks

Vanilla minecraft should never have more than 2 gigabytes of RAM, and more can cause issues, so if you haven't already try giving it only 1-2 gigabytes.

I appreciate the response, however this solution didn't work and only made the problem more frequent seeing as minecraft now has less RAM to run on. any other ideas?

Quote from cazlly»

I appreciate the response, however this solution didn't work and only made the problem more frequent seeing as minecraft now has less RAM to run on. any other ideas?

Just a sudgestion that you may try to test is to reduce rendering distance from 21 to 12 for example and compare how the game is behaving with that settings.

Again no such luck, it did how ever slightly slow the RAM usage climb, but the same problem persists.

What JVM arguments are you using? The default JVM arguments added for 1.8 were designed to prevent this issue by enabling incremental/concurrent garbage collection (garbage, memory no longer being used by the program, accumulating explains why you see memory usage increase, then it freezes while the JVM runs its garbage collector to free memory, then the process repeats). 1.8+ is particularly problematic because of the rate at which it allocates new objects, only to discard them.

Optifine's creator explains the issue here, and why older versions weren't so demanding (playing on modded 1.6.4 with Normal render distance I only see a full GC lasting 1/2-1 second perhaps 1-2 times per hour with 768 MB allocated (-Xms set to -Xmx so 100% is allocated; otherwise the JVM may allocate less and GC more often), which is far less objectionable than the stuttering that incremental/concurrent GC gives, although I only have a dual-core CPU; concurrent GC requires that the GC threads run at the same time as the application).

You can get the default arguments back by unchecking the JVM arguments box, save the profile, then reopen, then check the box again (this must be checked; if I uncheck it it only allocates 500 MB of memory, indicating that it isn't processing it as the default is 1 GB; note that you do need 2 GB if you use a render distance above 16 chunks; Optifine is poorly written in that it ignores this vanilla limitation so if you use it be sure that you have allocated enough memory).

I personally don't like Optifine, I find that it causes more problems then it solves most of the time for me. Ah, so that's what that java argument does. Yeah I had the RAM value set way to high for it so instead of running the garbage collector every 128mb as it is default I had it set to run every 6GB witch means it had to get rid of more stuff( if im understanding this correctly) witch causes the freeze. After resetting the JVM arguments, and then just changing the first value to 2 or above (since i play max render distance) the problem stopped. For the first couple launches of the game and loading worlds, I experience some bad crashing when trying to close and save and also some pretty bad block lag, all with really long load times. Not sure why this was happening but after a while it subsided and I haven't experienced a problem since. Thanks for the three of you for getting back to me so quickly. Such a good community.

Still I remain,

Cazlly