Memory storage info

Hi, lately people are using bitmaps to store memory for convenience however there are some down sides when you chec out the ram consumption check this out:

trace(System.privateMemory);//14 mb default used by air
var bitmapData:BitmapData = new BitmapData(9000,9000,false,0x00FF00);
trace(System.privateMemory);
//323mb used up by bitmap giving you also 81million slots of memory storage

which is good because it is easy to access the memory slots, but it is bad because it makes you run out of memory sometimes.

now with this way you only use around 10mb for 81million memory slots, each slot holding up to 4 digits like 9999


//initial memory used= 13 to 14mb
trace(System.privateMemory);
var my_ba:ByteArray=new ByteArray();
var bm_storage={};
var i=0;
for(i=0;i<9000;i++){
bm_storage["slot_"+i]={ba:ByteArray};
}
trace(System.privateMemory);
//1.5ish mb used by creating that ^
for(i=0;i<9000;i++){
my_ba.writeShort(9999);
}
trace(System.privateMemory);
//.1mb used by creating that ^

for(i=0;i<9000;i++){
bm_storage["slot_"+i].ba=my_ba;
}
trace(System.privateMemory);
//1mb by creating that ^^
//total 81,000,000 million accessible memory slots for around 12mb



so it is better to use writeShort and objects so i can map my memory more efficiently and just as close as accessible.