I have question about Buffer cache and command `free'.
On my debian 2.2 with linux kernel 2.2.17, i get the
memory information using command `free'.
$ free
total used free shared buffers cached
Mem: 46076 45024 1052 6836 4944 18740
-/+ buffers/cache: 21340 24736
Swap: 98748 3952 94796
Well, i understand Buffer cache existing between Block
device and Filesystem(ex:ext2 filesystem).
-----------------
| Filesystem |
-----------------
| Buffer cache |
-----------------
| Block device |
-----------------
And, i understand following:
[1]The sum of `buffers' and `cache' under command `free'
is the amount of Buffer cache area.
[2]In Buffer cache area, `buffers' is no data cached
space and `cache' is the data cached space.
My understanding is correct?
regards,
Susumu Takuwa
