CB #714 possibly maxing memory and shutting down server

These are the error I've gotten and they end up shutting the server down.

Code:

[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] Exception in thread "Connection #67
[SEVERE] read thread" Exception in thread "Connection #63 read thread"
[SEVERE] Exception in thread "EbeanBackgroundThread"
[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] Exception in thread "Connection #64 read thread"

and

Code:

[SEVERE] java.lang.OutOfMemoryError: GC overhead limit exceeded
[SEVERE] Unexpected exception
java.lang.OutOfMemoryError: GC overhead limit exceeded

 

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

 

1. What OS are you using?
Linux CentOS v5.6


2. What architecture is the OS you are running?
Both


3. What version and architecture is your java install?
Linux 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)

4. Are you running any wrappers?
No


5. What build of CraftBukkit are you running?
714

6. What command are you using to run your CraftBukkit server?
#!/bin/bash
java -Xms1024M -Xmx1024M -jar cb.jar

7. What plugins are you running?
BackupPlugin
BigBrother
CommandBook
FalseBook
GuestPrev
Help
iChat
LastLogin
Minecart Mania
MyHome
MyWarp
Permissions
PlugMan
PrivateWarp
TimeShift
Unknown Command
WorldEdit
WorldGuard
Yeditor

8. What error are you getting (post your server.log file if possible)?

Code:

[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] Exception in thread "Connection #67
[SEVERE] read thread" Exception in thread "Connection #63 read thread"
[SEVERE] Exception in thread "EbeanBackgroundThread"
[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] java.lang.OutOfMemoryError: Java heap space
[SEVERE] Exception in thread "Connection #64 read thread"

Code:

[SEVERE] java.lang.OutOfMemoryError: GC overhead limit exceeded
[SEVERE] Unexpected exception
java.lang.OutOfMemoryError: GC overhead limit exceeded

9. What have you tried already? Reporting it

10. Have you tried any of the things below?
Have a vanilla server running fine.
All plugins are the latest.

Note: I'm not trying to fix this problem. I'm not a programmer. I'm reporting it and this is as much information as I can give. Thank you.

 

Well, the problem appears to be this.
You have too many plugins, and not enough RAM. I would guess that about 3G should be good. How much RAM do you have? It's not craftbukkit or any of the plugins fault. look through your plugins and see if there's any you really don't need/use. delete those, any you should be fine!

 

I have 4GB of ram on my dedicated server. Thanks for trying to help, but this is a report to The Bukkit Team and nothing else. No troubleshooting is needed. Thanks again.

 

The thing is that you are not allocating enough ram to the server, and should be allocating more the 1gb to a server running that many plugins. Its not a problem with bukkit, but with your own settings.

edit: edited my post because I just did a quick google search to make sure I was correct.

 

java -Xms1024M -Xmx1024M -jar cb.jar
into
java -Xms2048M -Xmx2048M -jar cb.jar

 

well, there is no need to report this to the bukkit team. Programmer or not, if you just open the .bat you use to start the server and type this
java -Xms3G -Xmx3G -jar craftbukkit.jar
it will work absolutely fine
(change craftbukkit.jar to whatever you name your craftbukkit)

If you need, i can write the bat myself for you. Enjoy!

 

It's been running perfectly until 714, so the allocated amount of memory has been more than enough for everything.

I could run the server with more memory, but it doesn't require it.

Linux doesn't use .bat files and the 64 bit version of Java has a memory limitation of 2GB, just like the 32 bit version's 1GB limit.

Thanks all of the troubleshooting, but, as stated before, it's not needed. This was reported to make The Bukkit Team aware of the errors I received in their latest build. That's all.

 

Just to make it perfectly clear, you aren't asking to have anything fixed or want any advice on how to fix the problems but just want to notify someone of your problems which may or may not be in the Bukkit code and may or may not be caused by a lack of memory?

 

Fixed and correct. Thanks for playing.

Edit: Moved on to 716 and stopped watching thread.

 

no, look. this IS NOT A BUKKIT PROBLEM. and i can just as easily write a .sh (sorry, my mind blanked). is it working better on 716?

if you would just make a .sh that says this
java -Xms2G -Xmx2G -jar cb.jar
the whole problem would be fixed. and I know that 32x java works with 2G...
Please don't be ignorant, the solution has been stated by three members.

 

The bukkit devs don't read the forums looking for posts like this - if you want to report an error, go to leaky.bukkit.org.

You can try to modify the command this way:
java -Xincgc -Xmx1G -jar cb.jar

Which changes up the default garbage collection. Notice I didn't ask to allocate more RAM.

Otherwise expect people to help you as you're on a support forum, not a bug report forum.

On top of that, you need to strip out those plugins if you want anyone to take this seriously. Saying you have ~20 plugins, and pasting a "java is out of heap space" error could easily be due to a plugin problem.