03-24-2014, 10:05 PM
Hi, welcome to the forum.
The world data. The minecraft world is 256 blocks high and each client "sees" 10 chunks in each direction. This means a 21x21 area of chunks needs to be loaded for each player; each chunk having 16x256x16 blocks. Each block needs 1 byte of BlockType, 1/2 byte of BlockMeta and 1 byte of lighting data. Multiply all these together and you get the base memory usage:
21 * 21 * 16 * 256 * 16 * 2.5 = 72253440 = 70560 KiB ~ 68.9 MiB
Here's a minecraft wiki article on Chunks, to give you the overview: http://minecraft.gamepedia.com/Chunk
The world data. The minecraft world is 256 blocks high and each client "sees" 10 chunks in each direction. This means a 21x21 area of chunks needs to be loaded for each player; each chunk having 16x256x16 blocks. Each block needs 1 byte of BlockType, 1/2 byte of BlockMeta and 1 byte of lighting data. Multiply all these together and you get the base memory usage:
21 * 21 * 16 * 256 * 16 * 2.5 = 72253440 = 70560 KiB ~ 68.9 MiB
Here's a minecraft wiki article on Chunks, to give you the overview: http://minecraft.gamepedia.com/Chunk