OS X 10.9 - why is there not enough free RAM?

Question

macOS

After launch.
There is very little free space, is it supposed to be like that?
By the way, who has 10.10 installed, what does this figure look like?

Answer 1

This is fine. 4GB is basically not enough for comfortable work.
The concept of used memory also includes a cache. It can be released with the command
After it, see the parameter of the used memory.

Answer 2

Tyts. Not about OS X, but apparently the reason is the same

Answer 3

OS X has this policy: always load memory to the maximum. First of all, for elements that serve the responsiveness and speed of the UI (quick view, gadget bar, finder, etc.). So she will always find something to score 4GB with. With a shortage, data begins to swap, OOM, shrink - change the structure, freeing up for new tasks.
It is clear that with such a policy of 4GB it is uncomfortable. I myself have 2GB and everything is much worse. At 10.9 it slowed down a lot. I no longer use Mac, but with the update to 10.10 it seemed that the responsiveness had grown. But this may be because even more memory has been allocated to the system.
Since 10.9 I don’t look at the state of the memory, they even removed the indicator for the dock on the system monitor.