How do I reduce my tile size (the average tile size specified in the wiki is much smaller)?

well I have a question. http://wiki.openstreetmap.org/wiki/Tile_Disk_Usage says average tile size =634 bytes my minimum tile size is 22kb how do i reduce the tile size?size? (this question was split from [how-big-is-your-map-size-for-the-entire-world](/questions/9766/).)

well I have a question. http://wiki.openstreetmap.org/wiki/Tile_Disk_Usage says average tile size =634 bytes my minimum tile size is 22kb how do i reduce the tile size?