owned by tab
"Optimise your server/minecraft with 64bit java:
Minecraft 1.8 and 1.9 have put even more stress on memory and processor usage. Now more than ever it is recommended to use 64-bit java. This will give you less lag and is essential for high resolution texture packs. 64-bit java also allows you to give more memory to java. If you are getting out of memory errors moving to 64-bit will help.
If you only have 32-bit java, the most memory you can allocate to java is 1GB. ZaphodX: You can allocate up to 1.5GB, but only 1GB will be used. Remember that even if you have 64-bit java installed, 32-bit java will run by default unless you have changed it.
1 Check if you have a 64bit operating system:
i) Click Start and right click 'Computer'/'My computer'
ii) Choose 'Properties' from the menu
iii) Under 'System' you should have 'x64 Edition' or '64-bit Operating System'
2 Install 64-bit java. I recommend java 6. Install java 7 at your own risk, I can not offer support if you choose to use java 7.
i) Go to http://java.com/en/download/manual.jsp. Download 'Windows 7, XP Offline (64-bit)'.
ii) Double click the downloaded file and install 64bit java.
3 Change the default run path to the 64-bit version of java:
i)
For Windows XP:
Click Start -> Control Panel -> System -> Advanced
For Windows Vista/7:
Click Start and right click 'Computer'
Choose 'Properties' from the menu
Click 'Advanced' or 'Advanced system settings'
ii)Click on Environment Variables.
iii)Under System Variables, scroll down, find 'Path' or 'PATH', and click on it.
iv)Click the Edit button and then scroll to the front of the edit window, and paste this:
C:\Program Files\Java\jre6\bin;
v) Click OK->OK->OK
To verify you are using 64-bit java, open minecraft or your minecraft server. Press CTRL+SHIFT+ESC to open the task manager. Find java.exe and right-click it and select properties. If the location is ' C:\Program Files\Java\jre6\bin;' then it is using the 64-bit version of java.
Coming soon: Optimising your run.bat to increase performance.
Coming soon: Using bukkit and adding plugins"
http://www.planetminecraft.com/blog/how-to-make-a-minecraft-server/