Home / ubuntu / Questions / 1267437
Accepted
Badreldin Afifi
Asked: 2020-08-16 07:12:31 +0800 CST

Ubuntu 18.04 uses just 2 GB of 16 GB RAM. Do I need to do something about it?

  • 772

screenshot with a various performance checking tools showing low RAM usage: free -h shows 15 G total, 1.5G used, 12G free

I have 16 GB RAM, but my Ubuntu system just uses a maximum of 2 Gb!!? What should I do about this, if anything?

memory-usage ram memory-test

1 Answers

  1. Best Answer

    enter image description here

    Your system seems to be fine. It sees all 16G. And it'll only use as much memory as required by the system, and running applications. The rest of memory goes to file/disk buffers/cache or available, when viewed with the free -h command.

    total ~= used + free + buff/cache

    available ~= total - used

    • 2