So, I understand the output of "free" and all that, but can anyone
explain the behavior shown below? This after my computer has been up for
a couple hours, doing very little. It usually shows this behavior,
especially if I've run a lot of programs first. It seems like memory is
being reclaimed from somewhere (kernel data? X11?) without free knowing
about it.
quaternion:~$ free
total used free shared buffers cached
Mem: 256104 251680 4424 0 67536 66640
-/+ buffers/cache: 117504 138600
Swap: 0 0 0
quaternion:~$ ./src/crap
zsh: killed ./src/crap
quaternion:~$ free
total used free shared buffers cached
Mem: 256104 59900 196204 0 6828 13932
-/+ buffers/cache: 39140 216964
Swap: 0 0 0
For this test, I've turned off swap, and "crap" is a program that just
does "while (1) malloc(1000);". Note that apparent memory usage dropped
from 117M to 39M. Any explanations?
PS, please CC me on replies.
Thanks,
Jason
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