Originally Posted by sunny8107
So what does it mean by Free: 1.8829GB
Does that mean the total amount of RAM that is free? Or is the total amount of Free RAM just 44264KB?
The total buffers+cache+free is 1.8829GB.
For most practical purposes, you should consider memory used by buffers+cache to be free.
If any process needs some memory when there isn't enough free (in the narrower sense of free) the kernel will normally take memory from buffers or cache.
So in the broader sense of "free" (memory that is available for use when needed) buffers+cache is a kind of free memory.
But because there are these two senses of the word "free" for free memory, the free command gives you the information both ways (how much is used and free if you count buffers+cache as used, then how much is used and free if you count buffers+cache as free).