Minecraft Forums

So I got "java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui" from minecraft.net/download ; It made my server run faster, but not as fast as I would like it too.
It is completely vanilla, and I will be hosting an UHC in a week, with 15+ people.
When I change the "1024" to "2048" or more, it doesn't work...

Help me? - Babymercy8

Do you have a 32 bit operating system? or a 64 bit operating system?

Java 1.8.0_40
Also, I have a windows 8 computer (If it makes a difference)
It is a 64-bit operating system.
I am using Xisumavoid's UHC box for the UHC.
How would bukkit/spigot help?

Found this on the minecraft.net/download
java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui
But when I change the numbers to 2048, it crashes when I open it.

What is the error it gives?

It flashes open for half a second, I don't have enough time to read what it says..

There should be a crash/error log. Find it and post what it says.

Even if you do get it to work UHC is not the easiest to run due to how many chunks are generated at once. 2GBs of RAM will likely not be enough.

Quote from _Kratus_»

Even if you do get it to work UHC is not the easiest to run due to how many chunks are generated at once. 2GBs of RAM will likely not be enough.

32 render distance doesn't even consume 1GB of memory. 2GB is enough for most any server.

Error occurred during initialization of VM.
Could not reserve enough space for 20971528KB object heap.


That is what it shows when it closes. There is no crash report, nor a log.


I would like to use 2GB+ because I will have people from different Countries.

"java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui"
That works, but I would like to dedicate more.
"java -Xmx2048M -Xms2048M -jar minecraft_server.jar nogui"
Then
Quote from Babymercy jump
Error occurred during initialization of VM.
Could not reserve enough space for 20971528KB object heap.

I have 32-bit java, I am downloading 64bit now

Downloading a 64-bit java did not work. :\

~NotABump~

Had the UHC today, it was really laggy

That sucks, I said it would not be enough...

Had me and 4 other guys, 2 from Japan, and 2 from America. When the chunks were leading, we got lots of block lag.

Quote from Bodsterrr»

For windows 8 PC's, you need to download the Java x64 OFFLINE version, I have always found that the downloader rather than the installer doesn't work. http://javadl.sun.com/webapps/download/AutoDL?BundleId=104768

Thanks A TON!! It worked! <3