This is a memory stats from my VPS (OpenVZ).
$ free -m total used free shared buffers cached Mem: 800 405 394 0 0 405 -/+ buffers/cache: 0 800 Swap: 0 0 0
It hosts PHP stack (nginx, Apache, mod_php) + some Python apps via uWSGI, so machine is not idle anyway. Can anyone explain, why only cached memory is shown and buffers are always 0 (possibly, virtualization issue)? And what does
cached memory values exactly mean?
PS: I've seen similar questions like this, but they don't make it more clear...