Hi, dear all monks:
I am writting a block of code to calculate the free memory of a linux system box, but I am confused with the "buffers" and "cached" memory from the output generated by 'free' command.
[larry@localhost ~]$ free
total used free shared buffers cac
Mem: 8164688 3135816 5028872 0 24816 108
-/+ buffers/cache: 3002340 5162348
Swap: 0 0 0
What should I think of the "buffers" and "cached" memory? should I think they are part of free memory?
In my opinion, the kernel can take back the "buffers" and "cached" memory when some process require more memory but the free memory is lower than some threshhold.
If I am wrong, pls feel free to correct me, thx:)